Updated on 2024/12/26

Information

 

写真a

 
NAKABAYASHI KOJI
 
Organization
Institute for Materials Chemistry and Engineering Department of Advanced Device Materials Associate Professor
Interdisciplinary Graduate School of Engineering Sciences Department of Interdisciplinary Engineering Sciences(Concurrent)
Graduate School of Integrated Frontier Sciences Department of Automotive Science(Concurrent)
Title
Associate Professor
Contact information
メールアドレス
Tel
0925837136
Profile
活動概要としては、主に炭素材料に関する研究を行っている。 具体的には、電池用負極剤の開発、ピッチ系炭素繊維の作製、石油の水素化改質、カーボンナノファイバーの合成、マリンバイオマス、産業廃棄物の有効利用に関する研究などを行っている。近年では、座礁資源に興味を持って研究をしている。
External link

Degree

  • Ph.D. in Engineering

Research Interests・Research Keywords

  • Research theme: preparation of carbon materials from waste material

    Keyword: waste material

    Research period: 2024.4 - 2024.5

  • Research theme: Development of carbon material

    Keyword: 炭素構造体

    Research period: 2024.4 - 2024.5

  • Research theme: Preparation of carbon materials from marin biomass

    Keyword: marin biomass

    Research period: 2021.3 - 2022.3

  • Research theme: Preparation of carbon materials from Stranded Assets

    Keyword: Stranded Assets

    Research period: 2020.3 - 2031.3

  • Research theme: Preparation of carbon fiber from Stranded Assets

    Keyword: Stranded Assets

    Research period: 2020.3 - 2030.3

  • Research theme: Effective use of ash produced from coal-fired power generation, etc.

    Keyword: Ash

    Research period: 2020.3 - 2022.3

  • Research theme: Characterization of Asphaltene aggregates using X-ray diffraction

    Keyword: heavy oil, SPH

    Research period: 2016.9 - 2017.6

  • Research theme: Study on the investigation of dry sludge formation by using SPH process

    Keyword: heavy oil, dry sludge, SPH

    Research period: 2016.7 - 2019.7

  • Research theme: investigation of ethylene bottom oil

    Keyword: high utilization, ethylene bottom oil

    Research period: 2015.1 - 2016.10

  • Research theme: Development of Hydrotreatment system of heavy oil

    Keyword: Petroleum, Catalyst, Analytical chemistry

    Research period: 2015.1 - 2016.10

  • Research theme: Development of hyper coal

    Keyword: hyper coal, pitch, carbon fiber

    Research period: 2015.1 - 2016.10

  • Research theme: Investigation of high voltage capacitor by using activated carbon

    Keyword: activated carbon, super capacitor, high potential

    Research period: 2015.1 - 2016.10

  • Research theme: Study on the HDM and HDS reaction of heavy oil

    Keyword: 重油、脱硫、脱メタル

    Research period: 2015.1 - 2016.10

  • Research theme: Preparation of CNF using carbon dioxide

    Keyword: CNF、二酸化炭素、触媒

    Research period: 2015.1 - 2016.10

  • Research theme: Preparation of the CNF midified hetero atom

    Keyword: CNF、ヘテロ元素

    Research period: 2015.1 - 2016.10

  • Research theme: Development of catalyst design and of hydrotreatment process for kuwait heavy oil

    Keyword: Heavy oil, hydrogenation, catalyst

    Research period: 2014.12 - 2017.3

  • Research theme: Development of functional carbon materials derived from aromatic hydrocarbon

    Keyword: petroleum,coal,biomass,carbon materials, battery

    Research period: 2014.12 - 2015.5

Awards

  • 第92回日本化学会学生講演賞

    2012.3   日本化学会  

  • 第19回日本ソノケミストリー学会学会奨励賞

    2010.10   日本ソノケミストリー学会  

  • 第34回有機電子移動化学討論会最優秀学生講演賞

    2010.6   有機電子移動化学討論会実行委員会  

Papers

  • Enhanced porosity in marine biomass-derived activated carbon via two-step CO<sub>2</sub> activation and acidic decontamination

    Choi, J; Yi, HYS; Kato, T; Saito, K; Watanabe, H; Ideta, K; Shimohara, T; Miyawaki, J; Yoon, SH; Kim, YA; Nakabayashi, K

    CARBON LETTERS   2024.12   ISSN:1976-4251 eISSN:2233-4998

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    Publisher:Carbon Letters  

    Marine biomass (MB) is gaining attention as a sustainable and eco-friendly carbon source within the carbon cycle, particularly in regions with extensive coastlines. However, the high content of alkali and alkaline earth metals (AAEMs) in MB poses challenges in producing functional carbon materials, like activated carbon (AC), with a high specific surface area (SSA). In this study, we employed a two-step CO2 activation process, coupled with acid treatment, to successfully convert MB into highly porous AC. Preheating followed by nitric acid washing reduced AAEM content from 22.4 to 2.5 wt%, and subsequent atmospheric CO2 activation produced AC with an SSA of 1700 m2/g and mesopores of 3–5 nm. A further treatment with a mixed acid solution of nitric and acetic acids reduced impurities to below 1.0 wt%. A second pressurized CO2 activation at 1 MPa yielded AC with an SSA exceeding 2100 m2/g, with mesopores accounting for more than 50% of the total pore volume. This method demonstrates an effective approach to producing high-performance AC from MB for advanced applications.

    DOI: 10.1007/s42823-024-00833-y

    Web of Science

    Scopus

  • Reevaluation of the Suitability of <SUP>129</SUP>Xe Nuclear Magnetic Resonance Spectroscopy for Pore Size Determination in Porous Carbon Materials

    Li, MH; Ideta, K; Hata, K; Kil, HS; Kuroda, K; Zhai, XZ; Nakabayashi, K; Yoon, SH; Miyawaki, J

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   146 ( 50 )   34401 - 34412   2024.12   ISSN:0002-7863 eISSN:1520-5126

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    Language:English   Publisher:Journal of the American Chemical Society  

    Xenon isotope nuclear magnetic resonance (129Xe-NMR) spectroscopy has been widely used to evaluate the pore structure of materials. However, determining how to apply this technique to investigate porous carbon materials is sometimes challenging, partly due to the structural disorder and heterogeneity of the surface properties of these materials, and partly due to the lack of reliable methods for controlling and assessing the density of adsorbed Xe. In this study, we designed and constructed a temperature- and pressure-controllable 129Xe-NMR system to evaluate the interaction between activated carbon (AC) and adsorbed Xe molecules. Based on a confirmation of surface-covering adsorption form of Xe molecules in AC pores, the extrapolation to the ordinate in plots of the surface area-normalized Xe adsorption amount (ρXe) and measured 129Xe-NMR chemical shifts of adsorbed Xe molecules, δ(Xe), to remove the influence of the Xe-Xe interaction allowed us to estimate the interaction between the AC pore surface and a single Xe molecule. These data confirmed that interactions between the pore surface and adsorbed Xe molecules depend on a parameter related to the AC pore size, regardless of the content of oxygen-containing surface functional groups, and an empirical equation to estimate the average pore size of ACs from the 129Xe-NMR results was proposed. Downward deviations of the linear correlation between ρXe and δ(Xe) were attributed to the influence of paramagnetism presumably derived from oxygen-containing functional groups on the surfaces of ACs and to changes in the adsorption form in low- and high-ρXe regions, respectively. These findings confirm the suitability of 129Xe NMR for pore size determination in porous carbon materials.

    DOI: 10.1021/jacs.4c10099

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    PubMed

  • 1-10 Average molecular structure analysis of raw materials for pitch-based carbon fiber

    FUMOTO Eri, SATO Shinya, KAKINUMA Toshihiro, KAWAGUCHI Takuma, MORIMOTO Masato, SHIMANOE Hiroki, NAKABAYASHI Koji

    Proceedings of Conference on Coal Science   61 ( 0 )   20 - 21   2024.10   ISSN:24238295 eISSN:24238309

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    Language:Japanese   Publisher:The Japan Institute of Energy  

    <p>Raw materials for pitch-based carbon fiber were derived from coal and petroleum. These raw materials and the carbon fiber precursors prepared from the raw materials are complex mixtures of heavy hydrocarbons. Average molecular structure analysis of the raw materials and the precursors is important to develop high-quality carbon fibers. In this study, we investigated the changes in molecular structure during the preparation of precursors and the differences between the coal-based and petroleum-based precursors.</p>

    DOI: 10.20550/jiesekitanronbun.61.0_20

    CiNii Research

  • 2-11 Mechanisms for the production of activated carbon from marine biomass resources

    WATANABE Hiroko, SAITO Koji, KATO Toru, YI Hyeonseok, CHOI Ju-eun, IDETA Keiko, NAKABAYASHI Koji

    Proceedings of Conference on Coal Science   61 ( 0 )   50 - 51   2024.10   ISSN:24238295 eISSN:24238309

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    Language:Japanese   Publisher:The Japan Institute of Energy  

    <p>When kelp, a marine biomass, was carbonized, it was found that numerous fine pores were formed, creating a porous carbon material similar to activated carbon. Analysis of the gas components generated during heating and the carbonized material after heating revealed that kelp and wakame have different carbide structures, which helped clarify the mechanism of activated carbon production. It was also suggested that the salts contained in seaweed may influence the changes in molecular structure during the carbonization process.</p>

    DOI: 10.20550/jiesekitanronbun.61.0_50

    CiNii Research

  • Improvement of tensile strength and anti-oxidation property of graphite electrode for electric arc furnace through heterogenization of binder pitch

    Ono, K; Sung, MK; Peng, YS; Ha, SJ; Jeon, YP; Ikuya, T; Shusaku, H; Kang, FY; Yi, H; Park, JI; Nakabayashi, K; Miyawaki, J; Yoon, SH

    CARBON LETTERS   34 ( 7 )   1981 - 1993   2024.8   ISSN:1976-4251 eISSN:2233-4998

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    Publisher:Carbon Letters  

    This study involved the heterogenization of a binder pitch (BP) using a small amount of nanocarbon to improve physical properties of the resulting graphite electrode (GE). Heterogenization was carried out by adding 0.5–2.0 wt.% platelet carbon nanofiber (PCNF) or carbon black (CB) to a commercial BP. To evaluate the physical properties of the BPs, we designed a new model graphite electrode (MGE) using needle coke as a filler. The heterogenized binder pitch (HBP) with PCNF or CB clearly increased the coking value by 5–13 wt.% compared to that of the as-received BP. Especially, the model graphite electrodes prepared with HBPs containing 1.0 wt.% PCNF or CB showed significantly improved physical properties compared to the control MGE from the as-received BP. Although the model graphite electrodes prepared with HBPs showed similar properties, they had smaller pore sizes than the control. This indicates that heterogenization of the BP can effectively decrease the pore size in the MGE matrix. Correlating the average pore sizes with the physical properties of the model graphite electrodes showed that, for the same porosity, matrices formed by the HBP with a smaller average pore size can effectively improve the apparent density, tensile strength, and oxidation resistance of the model graphite electrodes.

    DOI: 10.1007/s42823-024-00736-y

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  • Preparation of spinnable mesophase pitch from pyrolyzed fuel oil by pressurized heat treatment and its application of carbon fiber

    Tomaru, T; Shimanoe, H; Hong, SH; Ha, SJ; Jeon, YP; Nakabayashi, K; Miyawaki, J; Yoon, SH

    CARBON   226   2024.6   ISSN:0008-6223 eISSN:1873-3891

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    Publisher:Carbon  

    Petroleum residues are produced as by-products of petroleum refining. Recently, various effective non-fuel uses of petroleum residues have been considered toward a carbon-neutral society. Pyrolysis fuel oil (PFO) is one of the petroleum residues. Advanced utilization of PFO for future non-combustion applications is required. In this study, Mesophase pitch-based carbon fibers (MPCF) were successfully produced from PFO. Spinnable mesophase pitch (SMP), a precursor of MPCF, was prepared using PFO as a raw material through the pressurized heat treatment at 420°C-430 °C. PFO is from the naphtha catalytic cracking process for ethylene production and is mainly composed of 2–4 condensed polycyclic aromatic hydrocarbons (PAHs). The high temperature pressurized heat treatment could result in the PFO-derived SMPs with yield of 23.0 wt% and excellent spinnability. On the other hand, without pressurized heat treatment, the yield was 8.5 wt%. This indicates that pressurized heat treatment significantly contributed to the yield improvement. In addition, the preference for the conversion of PFO molecules into highly condensed PAHs via cata-condensation during pressurized heat treatment at 420°C-430 °C was observed, which may be the main reason for the high yield and excellent spinnability of the resulting SMPs. As a result, the obtained PFO-derived SMPs though the such high-temperature pressurized heat treatment provided the typical radial-random transversal textures and general mechanical performances of MPCF: The tensile strength and Young's modulus of the PFO-derived MPCF graphitized at 2400 °C showed high values of 1.9–2.7 GPa and 554–635 GPa, respectively.

    DOI: 10.1016/j.carbon.2024.119160

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  • Qualitative Analysis of Nitrogen and Sulfur Compounds in Vacuum Gas Oils via Matrix-Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry

    Ueda, M; Lee, J; Yi, H; Lee, GH; Kim, YJ; Kim, GH; Oh, K; Yoon, SH; Nakabayashi, K; Park, JI

    MOLECULES   29 ( 11 )   2024.6   eISSN:1420-3049

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    Language:English   Publisher:Molecules  

    Analysis of the heavy fractions in crude oil has been important in petroleum industries. It is well known that heavy fractions such as vacuum gas oils (VGOs) include heteroatoms, of which sulfur and nitrogen are often characterized in many cases. We conducted research regarding the molecular species analysis of VGOs. Further refine processes using VGOs are becoming important when considering carbon recycling. In this work, we attempted to classify compounds within VGOs provided by Kuwait Institute for Scientific Research. Two VGOs were priorly distillated from Kuwait Export crude and Lower Fars crude. Quantitative analysis was performed mainly using matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOFMS). MALDI-TOF-MS has been developed for analyzing high-molecular-weight compounds such as polymer and biopolymers. As matrix selection is one of the most important aspects in MALDI-TOFMS, the careful selection of a matrix was firstly evaluated, followed by analysis using a Kendrick plot with nominal mass series (z*). The objective was to evaluate if this work could provide an effective classification of VGOs compounds. The Kendrick plot is a well-known method for processing mass data. The difference in the Kendrick mass defect (KMD) between CnH2n−14S and CnH2n−20O is only 0.0005 mass units, which makes it difficult in general to distinguish these compounds. However, since the z* value showed effective differences during the classification of these compounds, qualitative analysis could be possible. The analysis using nominal mass series showed the potential to be used as an effective method in analyzing heavy fractions.

    DOI: 10.3390/molecules29112508

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  • Preparation of spinnable mesophase pitch from pyrolyzed fuel oil by pressurized heat treatment and its application of carbon fiber Reviewed International journal

    Taisei Tomaru, Hiroki Shimanoe, Seonghwa Hong, Seung-Jae Ha, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Carbon   ( 226 )   119160   2024.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.carbon.2024.119160

  • Unveiling the hidden intrinsic porosity of marine biomass-derived carbon: Eliminating pore-blocking minerals

    He Da, Saito Koji, Kato Toru, Kosugi Chika, Shimohara Takaaki, Nakabayashi Koji, Yoon Seong-Ho, Miyawaki Jin

    Carbon Reports   3 ( 1 )   18 - 28   2024.3   ISSN:00086223 eISSN:24365831

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    Language:English   Publisher:The Carbon Society of Japan  

    <p>In the pursuit of carbon neutrality, marine biomass (MB) has emerged as a promising alternative to traditional carbon sources. This study endeavors to establish an economically viable pathway to derive porous carbon materials from MB. Simple pyrolysis of MB resulted in a MB-based carbon (MBC) characterized by a negligible open-pore structure. However, subsequent water washing transformed it into a porous material. N<sub>2</sub> adsorption tests revealed that the pyrolysis temperature and washing method substantially influenced the specific surface area (SSA) and pore volume of the MBC. While the catalytic activation function of elements inherent in MB, such as Na, Mg, K, Ca, and Cl, rendered MBC inherently porous, these elements also induced an initial pore-blocking effect that concealed the pores. Subsequent washing with water nearly eradicated Na, K, and Cl from MBC, making a number of the concealed pores accessible. Furthermore, a CO<sub>2</sub> aeration washing method effectively eliminated Mg and Ca elements from MBC, resulting in a substantial increase in SSA (>1000 m<sup>2</sup>/g) without the need for additional activation processes. Based on an understanding of the dual role of the elements naturally present in MB, this study demonstrates a potential strategy for environmentally friendly and cost-effective porous carbon production.</p>

    DOI: 10.7209/carbon.030102

    CiNii Research

  • Facile elimination of alkali and alkaline earth metals from marine biomass-derived carbon for comparative analysis of chemical composition with standard coal and coke

    He, D; Sakai, R; Saito, K; Kato, T; Kosugi, C; Yi, HYS; Shimohara, T; Nakabayashi, K; Yoon, SH; Miyawaki, J

    CARBON   216   2024.1   ISSN:0008-6223 eISSN:1873-3891

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    Publisher:Carbon  

    Pyrolysis of marine biomass (MB) to create marine biomass-derived carbon materials (MBCs) for industry is a sustainable solution. In this study, we systematically examined pyrolysis processes and performed elemental composition analyses of MB and MBC. The results revealed that MBC contained 12.5–25.5 mass% of alkali and alkaline earth metals (AAEMs). As the pyrolysis temperature increased, some of these AAEMs underwent physical phase changes. Subsequently, we applied CO2 aeration washing for the first time or low-concentrated acetic acid washing to eliminate AAEMs from MBC, reducing potential hazards in the future industrial application. Characterization results suggested that both post-processes effectively removed AAEMs from MBC, reducing the average content of Na and K to 0 mass%, Ca to 1.4 mass%, and Mg to 1.9 mass%. The Cl content was also reduced to 0.1 mass%. After removing AAEMs, the final carbon content of MBCs was as high as 90.8 mass% (dry ash free basis) with a minimum ash content of 6.4 mass% (dry basis) according to ultimate analysis. Comparison with commercial coal products showed that carbon contents were superior and ash contents were lower than those of most coal samples, suggesting that the treated MBCs are of sufficient quality for the carbon cycle industry.

    DOI: 10.1016/j.carbon.2023.118570

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  • Facile elimination of alkali and alkaline earth metals from marine biomass-derived carbon for comparative analysis of chemical composition with standard coal and coke Reviewed International journal

    Da He, Ryo Sakai, Koji Saito, Toru Kato, Chika Kosugi, Hyeonseok Yi, Takaaki Shimohara, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    Carbon   ( 216 )   118570   2024.1

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    DOI: DOI:10.1016/j.carbon.2023.118570

  • Unveiling the hidden intrinsic porosity of marine biomass-derived carbon: Eliminating pore-blocking minerals Reviewed International journal

    Da He, Koji Saito, Toru Kato, Chika Kosugi, Takaaki Shimohara, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    Carbon Reports   3 ( 1 )   18   2024.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: DOI:10.7209/carbon.030102

  • Carbon Fiber Created from Residues

    Nakabayashi Koji

    Sen'i Gakkaishi   80 ( 6 )   P-191 - P-193   2024   ISSN:00379875 eISSN:18842259

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    Language:Japanese   Publisher:The Society of Fiber Science and Technology, Japan  

    DOI: 10.2115/fiber.80.p-191

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  • THE TEMPERATURE INCREASE IN CARBON MATERIALS DURING MAGIC- ANGLE SPINNING SOLID-STATE NUCLEAR MAGNETIC RESONANCE MEASUREMENTS

    Hata, K; Ideta, K; Toda, S; Nakabayashi, K; Mochida, I; Yoon, SH; Miyawaki, J

    CARBON   215   2023.11   ISSN:0008-6223 eISSN:1873-3891

  • A quantitative evaluation of the large pore-size effect on the electric double-layer capacitance for high voltage by 19F-NMR

    Ideta, K; Yi, H; Kim, DW; Kim, T; Kim, YJ; Lee, YJ; Nakabayashi, K; Miyawaki, J; Park, JI; Yoon, SH

    CARBON   214   2023.10   ISSN:0008-6223 eISSN:1873-3891

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    Publisher:Carbon  

    Electric double-layer capacitors (EDLCs) afford long cycle life and high-power density by dielectric ion adsorption and desorption on the surface of porous materials. However, high potential charges/discharges lower the capacitance of EDLCs. In this study, we quantitatively evaluated the large pore-size effect of activated carbons (ACs) on the electric double layer capacitances at various voltages based on a hierarchical domain model from a structural point of view. ACs with highly developed microporous and mesoporous (2–4 nm) structures were prepared using KOH activation. The AC with small amount of mesopores showed a specific capacitance of 30.35 F/g at a voltage of 2.7 V, where it significantly lowered to 20.93 F/g at a high voltage of 3.3 V. Meanwhile, the highly microporous AC with abundant mesopores had a higher specific capacitance (40.77 F/g at 2.7 V to 38.22 F/g at 3.3 V). 19F-NMR results indicate that the amounts of solvated ions in the mesopores significantly increased in all the ACs after charging at a higher voltage. The mitigation of the high-voltage capacitance drop might occur because of the mesopore structure that functions as a buffer space for the electric double layer.

    DOI: 10.1016/j.carbon.2023.118346

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  • The temperature increase in carbon materials during magic-angle spinning solid-state nuculear magnetic resonance measurements

    Hata Koichiro, Ideta Keiko, Toda Shigemi, Nakabayashi Koji, Mochida Isao, Yoon Seong-Ho, Miyawaki Jin

    Carbon Reports   2 ( 3 )   179 - 184   2023.9   eISSN:24365831

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    Language:English   Publisher:The Carbon Society of Japan  

    <p>The structure of carbon materials and their precursors can be studied by magic-angle spinning solid-state nuclear magnetic resonance (MAS-SS-NMR). The state and structure of adsorbed and/or intercalated molecules and ions on/in the carbon materials can also be determined using this method. Eddy currents induced by the magnetic field during measurements cause a temperature increase in conducting carbon materials. The effects of various physical and chemical characteristics of the carbon materials on this temperature increase were investigated. The oxygen content was found to be the dominant factor determing the temperature increase, with a higher oxygen content giving a smaller temperature increase. This correlation enables a rough estimate of the temperature increase in carbon materials prior to performing MAS-SS-NMR measurements.</p>

    DOI: 10.7209/carbon.020304

    CiNii Research

  • A quantitative evaluation of the large pore-size effect on the electric double-layer capacitance for high voltage by 19F-NMR Reviewed International journal

    Keiko Ideta, Hyeonseok Yi, Doo-Won Kim, Taegon Kim, Yu-Jin Kim, Young Jin Lee, Koji Nakabayashi, Jin Miyawaki, Joo-Il Park, Seong-Ho Yoon

    Carbon   ( 214 )   118346   2023.5

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    DOI: DOI:10.1016/j.carbon.2023.118346

  • The temperature increase in carbon materials during magic-angle spinning solid-state nuculear magnetic resonance measurements Reviewed International journal

    Koichiro Hata, Keiko Ideta, Shigemi Toda, Koji Nakabayashi, Isao Mochida, Seong-Ho Yoon, Jin Miyawaki

    Carbon   ( 215 )   118395   2023.5

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: DOI:10.1016/j.carbon.2023.118395

  • Evaluation of the utility of isotropic pitches as solvent components of spinnable mesophase pitch precursors for highly graphitizable functional carbon materials Invited Reviewed International journal

    Hiroki Shimanoe, Takashi Mashio, Taisei Tomaru, Seung-Jae Ha, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY   120   325 - 331   2023.4   ISSN:1226-086X eISSN:1876-794X

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Journal of Industrial and Engineering Chemistry  

    Spinnable mesophase pitch (SMP) is an important graphitizable precursor for high-performance carbon materials. Generally, SMPs show fully developed anisotropic texture, and the pitches contain isotropic contents more than 30 wt%, which plays the role of solvent for the mesogenic components in the lyotropic liquid crystalline system of the pitch. Here, we prepared SMP by blending the mesogenic components of AR mesophase pitch with various isotropic pitches to evaluate the usability of isotropic pitches as solvents. The mesogenic components were prepared by tetrahydrofuran fractionation of AR mesophase pitch. Isotropic pitches with a softening point of 140–220 °C were prepared separately by simple heat treatment of slurry oil (SO) and coal tar pitch (CTP). SMPs were prepared by thermal blending of the above mentioned mesogenic components and isotropic pitches in various blending ratios. CTP-derived isotropic pitch showed better solvent performance than a SO-derived pitch in terms of anisotropic texture. SMP prepared by blending of the mesogenic components and CTP-derived isotropic pitch with a softening point of 180 °C at the ratio of 4/6 (w/w) showed almost 100% anisotropic texture; the carbon fiber derived from the pitch showed tensile strength of 2.7 GPa and Young's modulus of 470 GPa after graphitization at 2,800 °C.

    DOI: 10.1016/j.jiec.2022.12.039

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  • Analysis of spinnable mesophase pitch in terms of lyotropic liquid crystalline solution Invited Reviewed International journal

    Takashi Mashio, Taisei Tomaru, Hiroki Shimanoe, Seung Jae Ha, Young Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    CARBON LETTERS   33 ( 3 )   713 - 726   2023.1   ISSN:1976-4251 eISSN:2233-4998

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Carbon Letters  

    Mesophase pitch is a unique graphitizable material that has been used as an important precursor for highly graphitic carbon materials. In the current study, we propose to consider a spinnable mesophase pitch as a lyotropic liquid crystalline solution composed of solvent components and liquid crystalline components, so-called mesogen or mesogenic components. Among mesophase pitches, the supermesophase pitch is defined as a mesohpase pitch with 100% anisotropy, and can only be observed in pitches with a proportion of mesogenic components exceeding the threshold concentration (TC). We also examined the critical limit of AR synthetic pitch and 5 experimental spinnable mesophase pitches (SMPs). Then, we examined the effect of the solvent component on the minimum required amount of mesogenic component using a selected solvent component instead of their own solvent components. AR pitch showed 100% anisotropy with the least amount of its mesogenic component, THF insoluble components, of 60 wt.%. The solvent component, THF soluble components, extracted from AR-pitch, which has a molecular weight pattern similar to that of the original material but more amount of naphthenic alkyl chains, showed better solvent functionality than those of other THF solubles (THFSs) from other as-prepared spinnable mesophase pitches. This is why a lower amount of AR THFS can produce a supermesophase pitch when combined with the THFI (mesogenic components) of other experimental mesophase pitches. As a result of the current analysis, we define the mesogens as molecules that not only readily stack, but also maintain stacking structures in a fused state in the solution. The solvent component, on the other hand, is defined as molecules with a structure that readily decomposes in a fused state in the solution.

    DOI: 10.1007/s42823-022-00453-4

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  • Understanding mesophase pitch from a lyotropic liquid crystalline perspective Invited Reviewed International journal

    Hiroki Shimanoe, Takashi Mashio, Taisei Tomaru, Seung-Jae Ha, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    CARBON LETTERS   2 ( 1 )   2 - 22   2023.1   ISSN:00086223 eISSN:24365831

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Carbon Society of Japan  

    <p>This review explores recent research regarding mesophase pitch (MP). Spinnable mesophase pitch (SMP) was used as a model pitch for MP in all experiments. We explain some phenomenological results of the lyotropic liquid crystalline properties of the SMP, which show that the MP behaves as a typical lyotropic liquid crystal. The mesogenic and solvent components of SMP are defined. We define the threshold concentration (TC) as the minimum amount of mesogenic component necessary for SMP to achieve 100 vol% anisotropy. We also report the TCs of various SMPs and discuss the effects of the solvent component. Concerning the identity of the mesogenic component, we discuss quantitative correlations between the size of the layered molecular stacking units and the anisotropic content of the SMP. Research has shown that a layered molecular stacking unit larger than a specific size corresponds to the mesogenic component of the MP. We discuss a novel method for the manufacture of SMPs using our understanding of MP as a lyotropic liquid crystal, which comprises thermal mixing of optimal amounts of the mesogenic and solvent components that were prepared separately under different conditions. This method enables the properties of each component to be optimized without involving a costly hydrogenation process. Finally, we discuss how this approach can be used to increase SMP yield by modifying the contents of the anisotropic mesogenic and solvent components.</p>

    DOI: 10.7209/carbon.020105

    CiNii Research

  • 2-23 Component analysis by solid-state NMR for effective utilization of marine biomass

    IDETA Keiko, HE Da, SAKAI Ryo, YI Hyeonseok, SAITO Koji, KATO Toru, KOSUGI Chika, NAKABAYASHI Koji, YOON Seong-Ho, MIYAWAKI Jin

    Proceedings of Conference on Coal Science   59 ( 0 )   74 - 75   2022.10   ISSN:24238295 eISSN:24238309

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    <p>The use of biomass is being considered as a means to achieve carbon neutrality, but little progress has been made in the use of marine biomass. One of the reasons is the high ash content. In this presentation, we report on the analysis results of organic and inorganic components of two large seaweeds, Undaria pinnatifida (Wakame) and luminaria (Kombu), using solid-state NMR and other analytical techniques in order to investigate the chemical form of ash components.</p>

    DOI: 10.20550/jiesekitanronbun.59.0_74

    CiNii Research

  • 2-24 A Study of Pyrolysis Characteristics and Removal Method of Hetero-elements for Production of Marine Biomass-based Carbon Materials

    HE Da, SAKAI Ryo, IDETA Keiko, YI Hyeonseok, SAITO Koji, KATO Toru, KOSUGI Chika, NAKABAYASHI Koji, YOON Seong-Ho, MIYAWAKI Jin

    Proceedings of Conference on Coal Science   59 ( 0 )   76 - 77   2022.10   ISSN:24238295 eISSN:24238309

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    <p>As a new sustainable material resource, marine biomass (MB) is recently gathering attentions due to its high growing rate. Abundant hetero-elements contained in MB, however, would strongly influence on the pyrolytic behavior and thus physicochemical properties of the MB-based carbon materials (MBC). This study systematically investigated the pyrolysis characteristics and the facile hetero-elements removal method of MBC.</p>

    DOI: 10.20550/jiesekitanronbun.59.0_76

    CiNii Research

  • Preparation of environmental-friendly N-rich chitin-derived activated carbon for the removal of formaldehyde

    Ryu, DY; Kim, DW; Kang, YJ; Lee, Y; Nakabayashi, K; Miyawaki, J; Park, JI; Yoon, SH

    CARBON LETTERS   32 ( 6 )   1473 - 1479   2022.10   ISSN:1976-4251 eISSN:2233-4998

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    A conventional porous carbon is still a very promising material for the removal of gaseous pollutants because of its abundant surface functional groups and a high specific surface area. Here, we prepared an environment-friendly uniform N-rich narrow micropore activated carbon, for the removal of formaldehyde, based on steam activation and N-rich with chitin as the starting material. A sample carbonized at 500 °C and steam activated at 800 °C (CAC800) showed a reasonable yield (55%) with uniform and narrow micropores without mesopores but having a balanced nitrogen functionality. CAC800 possesses outstanding formaldehyde removal capabilities under both dry and wet (humidity 45%) conditions. In addition, when compared with commercial activated carbon materials, we clearly demonstrated that the existence of high nitrogen content with uniform and narrow micropores simultaneously removed formaldehyde, effectively.

    DOI: 10.1007/s42823-022-00379-x

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    Scopus

  • Correlation between molecular stacking and anisotropic texture in spinnable mesophase pitch Invited Reviewed International journal

    Hiroki Shimanoe, Takashi Mashio, Hideki Nakashima, Seunghyun Ko, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    RSC ADVANCES   192   395 - 404   2022.6   ISSN:0008-6223 eISSN:1873-3891

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    The correlation of the anisotropic texture and (002) the molecular stacking property of spinnable mesophase pitch (SMP) was closely examined. SMP was found to be a specific solution consisting of mesogenic and solvent components, and the mesogenic component was composed of a cluster unit of (002) stacked molecular sheets. The anisotropic texture of SMP was strongly correlated with the height of (002) molecular stacking. When the concentration ratio of the mesogenic component to the solvent component was higher than the threshold concentration, the SMP always had 100 vol% anisotropic texture and a similar or larger number of stacked (002) sheets compared with its mesogenic component in both the solid and molten states. The solvent component, in both lamellar and hexagonal phases, assisted orientation of mesogenic molecules and rearrangement of mesogenic cluster units, thereby inducing a higher degree of graphitization than that of the solvent-free mesophase pitch. A schematic phase model of SMP was proposed based on a lyotropic liquid crystalline system and a hierarchical domain model.

    DOI: 10.1016/j.carbon.2022.02.062

    Web of Science

    Scopus

  • 次世代の会 第8回定例会レポート

    石井 孝文, 中林 康治

    TANSO   2022 ( 301 )   52 - 53   2022.1   ISSN:03715345 eISSN:18845495

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    次世代の会 第8回定例会レポート

    DOI: 10.7209/tanso.2022.52

    CiNii Research

  • Achieving a Carbon Neutral Future through Advanced Functional Materials and Technologies Invited Reviewed International journal

    Andrew Chapman, Elif Ertekin, Masanobu Kubota, Akihide Nagao, Kaila Bertsch, Arnaud Macadre, Toshihiro Tsuchiyama, Takuro Masamura, Setsuo Takaki, Ryosuke Komoda, Mohsen Dadfarnia, Brian Somerday, Alexander Tsekov Staykov, Joichi Sugimura, Yoshinori Sawae, Takehiro Morita, Hiroyoshi Tanaka, Kazuyuki Yagi, Vlad Niste, Prabakaran Saravanan, Shugo Onitsuka, Ki-Seok Yoon, Seiji Ogo, Toshinori Matsushima, Ganbaatar Tumen-Ulzii, Dino Klotz, Dinh Hoa Nguyen, George Harrington, Chihaya Adachi, Hiroshige Matsumoto, Leonard Kwati, Yukina Takahashi, Nuttavut Kosem, Tatsumi Ishihara, Miho Yamauchi, Bidyut Baran Saha, Md. Amirul Islam, Jin Miyawaki Harish Sivasankaran, Masamichi Kohno, Shigenori Fujikawa, Roman Selyanchyn, Takeshi Tsuji, Yukihiro Higashi, Reiner Kirchheim, Petros Sofronis

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   95 ( 1 )   73 - 103   2022.1

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    DOI: 10.1246/bcsj.20210323

  • Study on the applicability of pressurized physically activated carbon as an adsorbent in adsorption heat pumps Invited Reviewed International journal

    Hyeonseok Yi, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    RSC ADVANCES   12 ( 5 )   2558 - 2563   2022.1   eISSN:2046-2069

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    Activated carbon is a suitable adsorbent for adsorption heat pumps (AHPs) with ethanol refrigerants. Although chemically activated carbon with highly developed pore structures exhibits good ethanol adsorption, the associated high production costs inhibit its practical application as an AHP adsorbent. Moreover, although physical activation can produce inexpensive activated carbon, the limited pore development limits the ethanol uptake. Recently, we developed a pressurized physical activation method that can produce activated carbon with a well-developed pore structure and characteristic pore size distribution. In this study, we investigated the applicability of the pressurized physically activated carbon as an adsorbent in activated carbon-ethanol AHP systems. Because of the large number of pressurization-induced pores of appropriate size, the pressurized physically activated carbon showed effective ethanol uptake comparable with that of chemically activated carbon on a weight basis. Furthermore, on a volume basis, the pressurized physically activated carbon, with a high bulk density, showed much higher effective ethanol uptake than chemically activated carbon. These results confirm the potential of the pressurized physically activated carbon as a relatively inexpensive high-performance adsorbent for AHP systems with ethanol refrigerants. This journal is

    DOI: 10.1039/d1ra08395c

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    Scopus

    PubMed

  • Theoretical dehumidification capacity of acorn nutshell-based activated carbon under two Asian urban cities' ambient air condition Invited Reviewed International journal

    Chairunnisa, Frantisek Miksik, Takahiko Miyazaki, Kyaw Thu, Jin Miyawaki, Koji Nakabayashi, Agung Tri Wijayant, Fitria Rahmawatie

    INTERNATIONAL JOURNAL OF REFRIGERATION   131   137 - 145   2021.11

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    DOI: 10.1016/j.ijrefrig.2021.08.012

  • Development of biomass based-activated carbon for adsorption dehumidification Invited Reviewed International journal

    Chairunnisa, Frantisek Miksik, Takahiko Miyazaki, Kyaw Thu, Jin Miyawaki, Koji Nakabayashi, Agung Tri Wijayant, Fitria Rahmawati

    ENERGY REPORTS   7   5871 - 5884   2021.11

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    DOI: 10.1016/j.egyr.2021.09.003

  • Effect of pore size in activated carbon on the response characteristic of electric double layer capacitor Invited Reviewed International journal

    Keiko Ideta, Doo-Won Kim, Taegon Kim, Koji Nakabayashi, Jin Miyawaki, Joo-Il Park, Seong-Ho Yoon

    JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY   102   321 - 326   2021.10

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    DOI: 10.1016/j.jiec.2021.07.014

  • Pressurized physical activation: A simple production method for activated carbon with a highly developed pore structure Invited Reviewed International journal

    Hyeonseok Yi, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    CARBON   183   735 - 742   2021.10

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    DOI: 10.1016/j.carbon.2021.07.061

  • Camphor leaf-derived activated carbon prepared by conventional physical activation and its water adsorption profile Invited Reviewed International journal

    Chairunnisa, N. Takata, K. Thu, T. Miyazaki, K. Nakabayashi, J. Miyawaki

    Carbon Letters   vol.31 ( (4) )   737 - 748   2021.6

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    DOI: DOI:10.1007/s42823-020-00204-3

  • Effect of blending on hydrotreating reactivities of atmospheric residues: Synergistic effects Invited Reviewed International journal

    Cui, Q., Ma, X., Nakano, K., Nakabayashi, K., Miyawaki, J., Al-Mutairi, A., Marafi, A.M.J., Al-Otaibi, A.M., Yoon, S.-H., Mochida, I.

    FUEL   293   2021.6

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    DOI: 10.1016/j.fuel.2021.120429

  • RECOGNITION AND APPLICATIONS OF HIERARCHICAL DOMAIN STRUCTURAL ANALYSIS FOR SYNTHETIC CARBONS Invited Reviewed International journal

    Koji Nakabayashi, Jin Miyawaki, Isao Mochida, Seong-Ho Yoon

    CARBON   175   608 - 608   2021.4

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  • Highly microporous activated carbon from acorn nutshells and its performance in water vapor adsorption Invited Reviewed International journal

    Chairunnisa, K. Thu, T. Miyazaki, K. Nakabayashi, J. Miyawaki, A. T. Wijayanta, F. Rahmawati

    Evergreen   8 ( 1 )   249 - 254   2021.1

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  • Highly microporous activated carbon from acorn nutshells and its performance in water vapor adsorption Reviewed International journal

    Chairunnisaa, Thu, K., Miyazaki, T., Nakabayashi, K., Miyawaki, , Wij Ayanta, A.T., Rahmawati, F.

    Evergreen   8 ( 1 )   249 - 254   2021.1

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  • Carbon from Bagasse Activated with Water Vapor and Its Adsorption Performance for Methylene Blue Invited Reviewed International journal

    Rahmawati, F., Ridassepri, A.F., Chairunnisab,, Wijayanta, A.T., Nakabayashi, K., Miyawaki, J., Miyazaki, T.

    APPLIED SCIENCES-BASEL   11 ( 2 )   2021.1

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    DOI: 10.3390/app11020678

  • Enhanced performance and durability of composite bipolar plate with surface modification of cactus-like carbon nanofibers Invited Reviewed International journal

    Jiang, F., Liao, W., Ayukawa, T., Yoon, S.-H., Nakabayashi, K., Miyawaki, J.

    JOURNAL OF POWER SOURCES   482   2021.1

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    DOI: 10.1016/j.jpowsour.2020.228903

  • Enhancing water adsorption capacity of acorn nutshell based activated carbon for adsorption thermal energy storage application Invited Reviewed International journal

    Chairunnisaa, Mikšík, F., Miyazaki, T., Thu, K., Miyawaki, J., Nakabayashi, K., Wijayanta, A.T., Rahmawati, F.

    ENERGY REPORTS   6   255 - 263   2020.12

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    DOI: 10.1016/j.egyr.2020.11.038

  • F-19 Ex Situ Solid-State NMR Study on Structural Differences in Pores of Activated Carbon Series Derived from Chemical and Physical Activation Processes for EDLCs Invited Reviewed International journal

    Ideta, K., Kim, D.-W., Kim, T., Nakabayashi, K., Miyawaki, J., Park, J.-I., Yoon, S.-H.

    JOURNAL OF PHYSICAL CHEMISTRY C   124 ( 23 )   12457 - 12465   2020.6

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    DOI: 10.1021/acs.jpcc.0c02106

  • Carbon waste powder prepared from carbon rod waste of zinc-carbon batteries for methyl orange adsorption Reviewed

    Fitria Rahmawati, Viona Natalia, Agung T. Wijayanta, Koji Nakabayashi, Jin Miyawaki, Siti Rondiyah

    Bulletin of Chemical Reaction Engineering & Catalysis   15 ( 1 )   66 - 73   2020.4

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    A research on the preparation of Carbon Waste Powder, CWP, was conducted and made from carbon rod waste which was extracted from used zinc-carbon batteries. This research was an effort to over-come environmental problem caused by battery waste by converting into adsorbent for methyl orange (MO) that frequently used by textile industries. The prepared powder was then analyzed to understand its characteristic peaks, crystallinity, and to compare the properties with other carbonaceous forms, i.e. a commercial Carbon Paper (CP), and a commercial meso- carbon micro-beads (MCMB). The analysis found that CWP is dominated by graphitic carbon. An adsorption experiment was then conducted to study their adsorption ability to methyl orange solution. The result found that those three carbona-ceous materials have the ability to adsorb methyl orange with different activities. MCMB has the high-est adsorption capacity of 0.197 mg.g-1. Meanwhile, CWP and CP show adsorption capacity of 0.066 mg.g-1 and 0.062 mg.g-1, respectively. Methyl orange adsorption on CWP and CP were under second or-der, which means the adsorption could be four times faster as the MO solution doubled. Moreover, the rate constant of MO adsorption on CWP is 8×10-4 min-1, which was higher than the rate constant of MO adsorption on CP. It confirmed that the CWP can be used as a promising adsorbent for dye waste wa-ter.

    DOI: 10.9767/bcrec.15.1.5148.66-73

  • Manufacturing spinnable mesophase pitch using direct coal extracted fraction and its derived mesophase pitch based carbon fiber Invited Reviewed International journal

    Shimanoe, H., Mashio, T., Nakabayashi, K., Inoue, T., Hamaguchi, M., Miyawaki, J., Mochida, I., Yoon, S.-H.

    CARBON   158   922 - 929   2020.3

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    DOI: 10.1016/j.carbon.2019.11.082

  • Establishment of Innovative Carbon Nanofiber Synthesis Technology Utilizing Carbon Dioxide Reviewed

    Koji Nakabayashi, Yoshinori Matsuo, Kazuya Isomoto, Kazunari Teshima, Tsubasa Ayukawa, Hiroki Shimanoe, Takashi Mashio, Isao Mochida, Jin Miyawaki, Seong Ho Yoon

    ACS Sustainable Chemistry and Engineering   8 ( 9 )   3844 - 3852   2020.3

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    The 18th century industrial revolution dramatically changed people's lives and allowed for rapid growth of the global economy. However, since that time, the mass consumption of fossil fuels has resulted in the release of large amounts of carbon dioxide (CO2) into the atmosphere, creating a greenhouse effect and global warming. In turn, global warming poses a serious threat to the workings of society. Thus, the immobilization of emitted CO2 and the development of effective CO2 utilization technologies are currently being investigated toward the development of a sustainable society. This study proposes the manufacture of carbon nanofiber (CNF) materials using CO2 gas as a carbon source. It is expected that this technology will be valuable as a means of recapturing CO2. We report herein the effects of CO2 on CNF growth using CO2 and hydrocarbon gases on simple catalytic chemical vapor deposition (CCVD) catalysts, including Fe, Ni, and Co. Four factors were examined: The effectiveness of the catalyst, the reaction temperature, the CO2 concentration, and the specific hydrocarbons supplied in the feed gas. Use of these techniques will enable one to expect (1) future utilization of exhaust gas emitted from thermal power stations and factories as a carbon source and (2) the future possibility of directly converting CO2 to CNF by utilizing the heat given off by emission from factories and other thermal power-generating facilities as a heat source in CNF synthesis, as well as the future possibility of proposing an effective CO2 utilization system that will be revolutionary in its impact.

    DOI: 10.1021/acssuschemeng.9b07253

  • Highly chlorinated polyvinyl chloride as a novel precursor for fibrous carbon material Reviewed

    Jinchang Liu, Hiroki Shimanoe, Seunghyun Ko, Hansong Lee, Chaehyun Jo, Jaewoong Lee, Seong Hwa Hong, Hyunchul Lee, Young Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong Ho Yoon

    Polymers   12 ( 2 )   2020.2

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    Pure, highly chlorinated polyvinyl chloride (CPVC), with a 63 wt % of chlorine, showed a unique-thermal-pyrolytic-phenomenon that meant it could be converted to carbon material through solid-phase carbonisation rather than liquid-phase carbonisation. The CPVC began to decompose at 270 °C, with a rapid loss in mass due to dehydrochlorination and novel aromatisation and polycondensation up to 400 °C. In this study, we attempted to prepare carbon fibre (CF) without oxidative stabilisation, using the aforementioned CPVC as a novel precursor. Through the processes of solution spinning and solid-state carbonisation, the spun CPVC fibre was directly converted to CF, with a carbonisation yield of 26.2 wt %. The CPVC-derived CF exhibited a relatively smooth surface; however, it still demonstrated a low mechanical performance. This was because the spun fibre was not stretched during the heat treatment. Tensile strength, Young's modulus and elongation values of 590 ± 84 MPa, 50 ± 8 GPa, and 1.2 ± 0.2%, respectively, were obtained from the CPVC spun fibre, with an average diameter of 19.4 μm, following carbonisation at 1600 °C for 5 min.

    DOI: 10.3390/polym12020328

  • Behaviors of cellulose-based activated carbon fiber for acetaldehyde adsorption at low concentration Reviewed

    Dong Yeon Ryu, Koji Nakabayashi, Takaaki Shimohara, Ueda Morio, Isao Mochida, Jin Miyawaki, Yukwon Jeon, Joo Il Park, Seong Ho Yoon

    Applied Sciences (Switzerland)   10 ( 1 )   2020.1

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    The toxic nature of acetaldehyde renders its removal from a wide range of materials highly desirable. Removal of low-concentration acetaldehyde (a group 1 carcinogenic volatile organic compound) using an adsorbent of cellulose-based activated carbon fiber modified by amine functional group (A@CACF-H) is proposed, using 2 ppm of acetaldehyde balanced with N2/O2 (79/21% v/v) observed under continuous flow, with a total flow rate of 100 mL/min over 50 mg of A@CACF-H. The effective removal of the targeted acetaldehyde is achieved by introducing the functionalized amine at optimized content. The removal mechanism of A@CACF-H is elucidated using two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (2D-GC TOF-MS), indicating the efficacy of the proposed acetaldehyde removal method.

    DOI: 10.3390/app10010025

  • Environmental-friendly production of carbon fiber from isotropic hybrid pitches synthesized from waste biomass and polystyrene with ethylene bottom oil Reviewed

    Özsin Gamzenur, Ayşe Eren Pütün, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Journal of Cleaner Production   239   2019.12

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    In this study, spinnable isotropic pitches (IPs) were produced by pyrolytic oils of biomass and polystyrene (PS) with ethylene bottom oil (EBO or pyrolysis fuel oil: PFO) through bromination/dehydrobromination reaction. To develop spinnable pitches, four different tars were produced and hybrid pitches were synthesized using different PFO blending ratios and bromine amounts. Results showed that PFO improves spinnability and pitch yield considerably. Furthermore, pitches with the same softening point (S.P.) were produced from different precursors and spinning, stabilization and carbonization were performed to produce general-performance carbon fiber (CF). In order to explain the structure-property relationship of the products, mechanical, morphological and chemical characterization were done by TOF-MS, elemental analysis, 13C-NMR and SEM-EDX. Thus, a comparison between the characteristics of CFs was made disregarding the S.P.s and more insight into the effect of EBO was gained. Mechanical properties of CFs found to be reasonable, considering typical tensile values of IP-based CFs.

    DOI: 10.1016/j.jclepro.2019.118025

  • Shortening stabilization time using pressurized air flow in manufacturing mesophase pitch-based carbon fiber Reviewed

    Hiroki Shimanoe, Seunghyun Ko, Young Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong Ho Yoon

    Polymers   11 ( 12 )   2019.12

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    Oxidation-stabilization using pressurized air flows of 0.5 and 1.0 MPa could successfully shorten the total stabilization time to less than 60 min for manufacturing mesophase pitch-based carbon fibers without deteriorating mechanical performance. Notably, the carbonized fiber heat-treated at 1000 °C for 30 min, which was oxidative-stabilized at 260 °C without soaking time with a heating rate of 2.0 °C/min using 100 mL/min of pressurized air flow of 0.5 MPa (total stabilization time: 55 min), showed excellent tensile strength and Young0s modulus of 3.4 and 177 GPa, respectively, which were higher than those of carbonized fiber oxidation-stabilized at 270 °C without soaking time with a heating rate of 0.5 °C/min using 100 mL/min of atmospheric air flow (total stabilization time: 300 min). Activation energies for oxidation reactions in stabilization using pressurized air flows were much lower than those of oxidation reactions using atmospheric air flow because of the higher oxidation diffusion from the outer surface into the center part of pitch fibers for the use of the pressurized air flows of 0.5 and 1.0 MPa than the atmospheric one. The higher oxygen diffusivities resulted in a more homogeneous distribution of oxygen weight uptake across the transverse section of mesophase pitch fibers, and allowed the improvement of the mechanical properties.

    DOI: 10.3390/polym11121911

  • Changes in Composition and Molecular Structures of Atmospheric Residues during Hydrotreating Reviewed

    Qingyan Cui, Xiaoliang Ma, Koji Nakabayashi, Koji Nakano, Jin Miyawaki, Adel Al-Mutairi, Abdulazeem M.J. Marafi, Ahmed M. Al-Otaibi, Seong Ho Yoon, Isao Mochida

    Energy and Fuels   33 ( 11 )   10787 - 10794   2019.11

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    Better understanding of the changes in composition and molecular structures of atmospheric residue (AR) during hydrotreating is important for improving the hydrotreating performance of AR. Hydrotreating of an AR was carried out in a series of fixed bed reactors loaded with hydrodemetallization (HDM) and hydrodesulfurization (HDS) catalysts. The AR and its products were fractionated into saturates, aromatics, resins, and asphaltenes (SARA) and analyzed by using the gel permeation chromatography with an ultraviolet detector (GPC-UV) and with an inductively coupled plasma mass spectrometer (GPC), X-ray diffraction (XRD), 13C nuclear magnetic resonance (13C NMR), and electron spin resonance (ESR). Hydrotreating not only decreased the contents of S, N, V, Ni, resins, and asphaltenes, but also changed the composition, structure, and distribution of the remaining resins and asphaltenes as well as the remaining S, N, V, and Ni compounds in AR products. Almost all metals (V and Ni) existed in both resin (47%) and asphaltene (53%) fractions of AR, whereas in the final hydrotreated product, more than 84% of the remaining metals, which are considered as the most refractory metal compounds, were in the asphaltenes, especially those with larger molecular size. The metal compounds in resins were easier to be removed. The low HDM reactivity of the remaining metal compounds can be attributed to their larger molecular size, which inhibited their approach to the active sites of the catalysts.

    DOI: 10.1021/acs.energyfuels.9b02692

  • Interaction of Vanadyl Complexes in Atmospheric Residue with Their Matrixes An ESR Study in a Temperature Range up to 170 °c Reviewed

    Qingyan Cui, Xiaoliang Ma, Koji Nakabayashi, Jin Miyawaki, Adel Al-Mutairi, Abdulazim M.J. Marafi, Ahmed M. Al-Otaibi, Seong Ho Yoon, Isao Mochida

    Journal of Physical Chemistry C   123 ( 33 )   20587 - 20593   2019.8

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    It is important to understand the interaction of vanadyl complexes in atmospheric residue (AR) with their matrixes at different conditions for demetallization processes of AR and heavy oil. An ESR study in rotational mobility of vanadyl complexes in AR was conducted at a temperature range from 20 to 170 °C with and without 1-methylnaphthalene as solvent. A complete transformation of the ESR spectrum from anisotropy to isotropy was observed at a temperature of 170 °C with decreasing AR concentration in 1-methylnaphthalene from 100 to 20 wt %, which corresponds to a transformation of the vanadyl complexes from a rigid status constrained by the surrounding matrixes to a free status. Both increase in the temperature and decrease in the AR concentration are beneficial to such transformation. The study showed that dependency of the rotational mobility of vanadyl complexes on the temperature and concentration can be classified into three domains: isotropic, transitional, and anisotropic domains. In the anisotropic domain, effects of the temperature and concentration on the B parameter can be estimated quantitatively through a model with a standard error of 0.0351. According to this study, a B contour map as a function of temperature and concentration was obtained, which provides a deeper and more comprehensive insight into the constraint on the rotational mobility of vanadyl complexes by their surrounding matrixes in AR and thus is useful for improving the demetallization process of AR and heavy oil.

    DOI: 10.1021/acs.jpcc.9b04808

  • Toward development of activated carbons with enhanced effective adsorption amount by control of activation process

    Yao Yu, Hyun Sig Kil, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    4th International Conference on Industrial, Mechanical, Electrical, and Chemical Engineering, ICIMECE 2018 4th International Conference on Industrial, Mechanical, Electrical, and Chemical Engineering   2019.4

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    Pore size and pore size distribution (PSD) govern effective adsorption amount, which is one of requisite properties as adsorbents in the practical applications. Although activated carbon (AC) offers remarkably high specific surface area, tailoring its PSD according to certain application, for example, narrowing the PSD, shall further enhance its superior adsorption performances. In this study, narrow PSD was challenged by attempting two-step activation process under various conditions/mixing methods using once-activated carbon as a starting material. AC with narrow PSD was successfully obtained by both slowing the heating rate and adopting solution impregnation method for second activation of the once-activated starting sample. Such expected effect was most probably attributed to more uniform distribution of activating agent on both external and internal carbon surfaces of the microporous starting sample.

    DOI: 10.1063/1.5098173

  • Effect of the pre-treated pyrolysis fuel oil Coal tar pitch ratio on the spinnability and oxidation properties of isotropic pitch precursors and the mechanical properties of derived carbon fibers Reviewed

    Jinchang Liu, Hiroki Shimanoe, Jong Eun Choi, Seunghyun Ko, Young Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Carbon Letters   29 ( 2 )   193 - 202   2019.4

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    Pitch precursors affording excellent spinnability, high-level oxidation-resistance, and good carbonization yields were prepared by bromination–dehydrobromination of various ratios of pyrolyzed fuel oil and coal tar pitch. The pitches exhibited spin-nabilities that were much better than those of pitches prepared via simple distillation. A pitch prepared using a 1:2 ratio of fuel oil and coal tar pitch exhibited the best tensile strength. Pitch fibers of diameter 8.9 ± 0.1 μm were stabilized at 270 °C without soaking time after heating at a rate of 0.5 °C/min and carbonized at 1100 °C for 1 h after heating at 5 °C/min. The resulting carbon fibers exhibited a tensile strength, elongation, Young’s modulus, and average diameter of 1700 ± 170 MPa, 1.6 ± 0.1%, 106 ± 37 GPa, and 7.1 ± 0.2 μm, respectively.

    DOI: 10.1007/s42823-019-00020-4

  • Enhancement of first cycle coulombic efficiency of hard carbon derived from Eucalyptus in a sodium ion battery Reviewed

    Koji Nakabayashi, Hyeonseok Yi, Dong Yeon Ryu, Dabin Chung, Jin Miyawaki, Seong Ho Yoon

    Chemistry Letters   48 ( 7 )   753 - 755   2019.1

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    Hard carbon derived from green Eucalyptus trees from Ethiopia was developed to enhance 1st cycle Coulombic efficiency as the anode for SIBs. Different heat treatment temperatures were applied for preparing hard carbon from Eucalyptus wood to form suitable disordered carbon structure, interlayer space, and effective pores. Hard carbon heat-treated at 1400 °C indicated the highest electrochemical properties such as discharge capacities and 1st cycle Coulombic efficiency. Especially, hard carbons heat treated above 1200 °C indicated above 80% of 1st cycle Coulombic efficiency which is relatively high.

    DOI: 10.1246/cl.190230

  • Urea/nitric acid co-impregnated pitch-based activated carbon fiber for the effective removal of formaldehyde Reviewed

    Dong Yeon Ryu, Takaaki Shimohara, Koji Nakabayashi, Jin Miyawaki, Joo Il Park, Seong-Ho Yoon

    Journal of Industrial and Engineering Chemistry   2019.1

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    Urea/nitric acid co-impregnated pitch-based activated carbon fibers (ACFs) were examined as adsorbents for the removal of low-concentration formaldehyde gas from dry and humid atmospheres. Urea, which is a harmless and environmentally friendly primary amine, was selected as an effective reagent to capture formaldehyde and nitric acid was used to promote the oxidation of formaldehyde into formic acid, which inhibits the liberation of formaldehyde even under humid atmospheres. The optimized urea/nitric acid co-impregnated ACF showed a 110-fold (0.72 mg/g to 79.28 mg/g) improvement in its formaldehyde removal capability as compared to that of pristine ACF at 40% humidity. The formaldehyde removal mechanism is proposed based on careful analysis and quantification of the inlet and outlet gases. Further, the optimized sample facilitates complete removal of formaldehyde from ambient air at humidity of 11–88% and temperatures of 3–26.9 °C over 24 h, whereas only 81.5% formaldehyde removal is achieved with pristine ACF under the same conditions.

    DOI: 10.1016/j.jiec.2019.07.036

  • Manufacturing spinnable mesophase pitch using direct coal extracted fraction and its derived mesophase pitch based carbon fiber Reviewed

    Hiroki Shimanoe, Takashi Mashio, Koji Nakabayashi, Toshinori Inoue, Maki Hamaguchi, Jin Miyawaki, Isao Mochida, Seong Ho Yoon

    Carbon   2019.1

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    Spinnable mesophase pitch with high pitch yield of more than 50 wt% was successfully prepared using direct bitumen coal extracted fraction through the three-step process of hydrogenation, N2 blowing heat treatment, and thin-layer evaporation. The prepared mesophase pitch was smoothly spun to the fibrous form and could be converted into mesophase pitch-based carbonized and graphitized fibers through the usual oxidative stabilization, carbonization, and graphitization. The prepared mesophase pitch based carbon fibers showed typical random transversal structures with mechanical performances, tensile strengths of 1.83 GPa and 3.00 GPa, Young's moduli of 133 GPa and 450 GPa, and elongation properties of 1.37% and 0.68% after heat treatments at 1000 °C for 30 min and 2800 °C for 10 min, respectively. The relatively high-molecular-weight and well-developed polynuclear aromatic molecular structure of hypercoal is the likely reason for the high mesophase pitch yield. The meaning of each preparation processes, hydrogenation, N2 blowing heat treatment and thin layered evaporation, was discussed in detail. We anticipate that the success of high-yield mesophase pitch manufacturing using hypercoal as raw material will be an important key to innovatively reduce the production cost of mesophase pitch-based carbon fiber.

    DOI: 10.1016/j.carbon.2019.11.082

  • Adsorption of Difluoromethane (HFC-32) onto phenol resin based adsorbent Theory and experiments Reviewed

    Muhammad Sultan, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Hyun Sig Kil, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    International Journal of Heat and Mass Transfer   127   348 - 356   2018.12

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    Adsorption and desorption of difluoromethane (HFC-32) onto newly developed phenol resin based adsorbent (SAC-2) have been measured experimentally for the isotherm temperatures ranging from 30 °C to 130 °C and pressure up to 3 MPa. A magnetic suspension balance based adsorption measurement unit is used to measure adsorption uptake gravimetrically. The presented SAC-2/HFC-32 pair has adsorption uptake as high as 2.23 kgref/kgads (excess adsorption) and 2.34 kgref/kgads (absolute adsorption) at 30 °C and 1.67 MPa. To the best of our knowledge, it is the highest HFC-32 adsorption capacity onto any adsorbent available in the literature. The experimental data of adsorption/desorption isotherms show that there is no hysteresis for the studied pair. The data have been fitted with Tóth; Dubinin–Astakhov (D–A); and Guggenheim, Anderson, De-Boer (GAB) adsorption isotherm models. The parameters of adsorption isotherm models are optimized by nonlinear optimization technique. The D–A model fits the experimental data precisely as compared to other models. In addition, numerical values of isosteric heat of adsorption have also been extracted by means of Clausius–Clapeyron equation using adsorption isotherm models.

    DOI: 10.1016/j.ijheatmasstransfer.2018.07.097

  • Hydrotreating Reactivities of Atmospheric Residues and Correlation with Their Composition and Properties Reviewed

    Qingyan Cui, Xiaoliang Ma, Koji Nakano, Koji Nakabayashi, Jin Miyawaki, Adel Al-Mutairi, Abdulazim Mj Marafi, Joo Il Park, Seong Ho Yoon, Isao Mochida

    Energy & Fuels   32 ( 6 )   6726 - 6736   2018.6

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    In order to better understand the effects of composition and properties of atmospheric residues (AR) on their reactivities for hydrodesulfurization (HDS), hydrodenitrogenation (HDN), hydrodevanadium (HDV), hydrodenickel (HDNi), hydrodeasphaltene (HDAsp), and hydrodeconradson-carbon-residue (HDCCR) in the hydrotreating process, analysis and characterization of three ARs (AA-AR, AB-AR, and AM-AR) from Arabia crudes were conducted, and their hydrotreating reactivities were evaluated in a pilot unit over a catalyst system at 370 °C under a H2 pressure of 13.5 MPa by comparing the conversions of the various species and their rate constants on each catalyst. The overall reactivity of various species decreases in the order of vanadium species > sulfur species ≈ asphaltenes > nickel species > Conradson carbon residue precursor > nitrogen species, regardless of the sources of the ARs. Reactivities of the three ARs in HDS, HDV, and HDAsp increase in the order of AB-AR < AA-AR < AM-AR, while reactivities of the three ARs in HDNi, HDCCR, and HDN are similar. The higher nitrogen and asphaltenes concentrations and larger density of AR have strong and negative effects on the HDS, HDV, and HDAsp reactivities but no significant effect on the HDN, HDNi, and HDCCR reactivities. The B parameter obtained from electron spin resonance analysis can be a good index to predict the HDV reactivity of AR.

    DOI: 10.1021/acs.energyfuels.8b01150

  • Retraction notice to Size-controlled spherical polymer nanoparticles synthesis with tandem acoustic emulsification followed by soap-free emulsion polymerization and one-step fabrication of colloidal crystal films of various colors: Size-controlled spherical polymer nanoparticles: synthesis with tandem acoustic emulsification followed by soap-free emulsion polymerization and one-step fabrication of colloidal crystal films of various colors 21/6 (2014) 1921 – 1927 (Ultrasonics Sonochemistry (2014) (21)(6) (1921–1927)(S135041771300312X)(10.1016/j.ultsonch.2013.12.006)) Reviewed

    Yuki Hirai, Koji Nakabayashi, Maya Kojima, Mahito Atobe

    Ultrasonics Sonochemistry   42   2018.4

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    Available online 05-JUL-2014 This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). <The entire ‘Reason’ text must be identical to that in the XML version (Box 6)> This article was retracted at the request of the Editor. Article in Ultrasonics Sonochemistry which is guilty of self-plagiarism is “Size-controlled spherical polymer nanoparticles: Synthesis with tandem acoustic emulsification followed by soap-free emulsion polymerization and one-step fabrication of colloidal crystal films of various colors” < http://www.sciencedirect.com/science/article/pii/S135041771300312X>The above paper is essentially a duplicate of an original Article in “Size-Controlled Synthesis of Polymer Nanoparticles with Tandem Acoustic Emulsification Followed by Soap-Free Emulsion Polymerization” ACS Macro Lett., 2013, 2 (6), pp 482-484, 10.1021/mz4001817.

    DOI: 10.1016/j.ultsonch.2018.01.011

  • Electrooxidative copolymerization of 3,4-Ethylenedioxithiophene and benzene from a mixture of each monomer Reviewed

    Eisaku Tanaka, Hiroyuki Tateno, Yoshimasa Matsumura, Koji Nakabayashi, Izuru Kawamura, Mahito Atobe

    Bulletin of the Chemical Society of Japan   91 ( 2 )   141 - 146   2018.1

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    Electrooxidative copolymerization of 3,4-ethylenedioxithiophene (EDOT) and benzene from a mixture of the monomers with concentrations of 5mM EDOT and 5M benzene produced copolymer films on an anode surface. The formation of copolymer films and characterization of their electrochemical properties was confirmed using Fourier transform infrared (FTIR) spectroscopy, ultravioletvisible absorption (UVvis) spectroscopy, energy dispersive X-ray (EDX) spectroscopy, cyclic voltammetry (CV), and solid-state carbon-13 nuclear magnetic resonance (13CNMR) spectroscopy measurements. Furthermore, the copolymerization ratio could be controlled by selection of the oxidation potential applied for copolymerization.

    DOI: 10.1246/bcsj.20170319

  • Enhancing the oxidative stabilization of isotropic pitch precursors prepared through the co-carbonization of ethylene bottom oil and polyvinyl chloride Reviewed

    Jinchang Liu, Hiroki Shimanoe, Koji Nakabayashi, Jin Miyawaki, Jong Eun Choi, Young Pyo Jeon, Seong-Ho Yoon

    Journal of Industrial and Engineering Chemistry   2018.1

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    An isotropic pitch precursor for fabricating carbon fibres was prepared by co-carbonization of ethylene bottom oil (EBO) and polyvinyl chloride (PVC). Various pre-treatments of EBO and PVC, and a high heating rate of 3 °C/min with no holding time, were evaluated for their effects on the oxidative stabilization process and the mechanical stability of the resulting fibres. Our stabilization process enhanced the volatilization, oxidative reaction and decomposition properties of the precursor pitch, while the addition of PVC both decreased the onset time and accelerated the oxidative reaction. Aliphatic carbon groups played a critical role in stabilization. Microstructural characterization indicated that these were first oxidised to carbon–oxygen single bonds and then converted to carbon–oxygen double bonds. Due to the higher heating rate and lack of a holding step during processing, the resulting thermoplastic fibers did not completely convert to thermoset materials, allowing partially melted, adjacent fibres to fuse. Fiber surfaces were smooth and homogeneous. Of the various methods evaluated herein, carbon fibers derived from pressure-treated EBO and PVC exhibited the highest tensile strength. This work shows that enhancing the naphthenic component of a pitch precursor through the co-carbonization of pre-treated EBO with PVC improves the oxidative properties of the resulting carbon fibers.

    DOI: 10.1016/j.jiec.2018.07.008

  • Examining the molecular entanglement between V=O complexes and their matrices in atmospheric residues by ESR Reviewed International journal

    Cui, Qingyan, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊, Ma, Xiaoliang, Marafi, Abdulazim M. J., Al-Mutairi, Adel, 持田勲

    RSC ADVANCES   7 ( 60 )   37908 - 37914   2017.11

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  • Molecular simulation aided nanoporous carbon design for highly efficient low-concentrated formaldehyde capture Reviewed

    Piotr Kowalczyk, Jin Miyawaki, Yuki Azuma, Seong-Ho Yoon, Koji Nakabayashi, Piotr A. Gauden, Sylwester Furmaniak, Artur P. Terzyk, Marek Wisniewski, Jerzy Włoch, Katsumi Kaneko, Alexander V. Neimark

    Carbon   124   152 - 160   2017.11

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    Although recent experimental studies have demonstrated that doping of nanoporous carbons with nitrogen is an effective strategy for highly diluted formaldehyde capture, the impact of carbon surface chemistry and the pore size on formaldehyde capture at ∼ppm concentrations is still poorly understood and controversial. This work presents a combined theoretical and experimental study on dynamic formaldehyde adsorption on pure and oxidized nanocarbons. We find using Monte Carlo simulations and confirm experimentally that cooperative effects of pore size and oxygen surface chemistry have profound impacts on the breakthrough time of formaldehyde. Molecular modeling of formaldehyde adsorption on pure and oxidized model nanoporous carbons at ∼ppm pressures reveals that high adsorption of formaldehyde ppm concentrations in narrow ultramicropores <6 Å decorated with phenolic and carboxylic groups is correlated with long formaldehyde breakthrough times measured in the columns packed with specially prepared oxidized activated carbon fiber adsorbents with the pore size of ∼5 Å.

    DOI: 10.1016/j.carbon.2017.08.024

  • Highly graphitized carbon from non-graphitizable raw material and its formation mechanism based on domain theory Invited Reviewed International journal

    Kil, Hyun-Sig, Kim, Doo-Won, Kim, Jandee, Mochida, Isao, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    CARBON   121   301 - 308   2017.9

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    DOI: 10.1016/j.carbon.2017.05.086

  • Effects of Blending and Heat-Treating on Composition and Distribution of SARA Fractions of Atmospheric Residues Invited Reviewed International journal

    Cui, Qingyan, Koji NAKABAYASHI, Ma, Xiaoliang, 宮脇 仁, Al-Mutairi, Adel, Marafi, Abdulazim, Park, Joo-Il, 尹 聖昊, Mochida, Isao

    ENERGY & FUELS   31 ( 7 )   6637 - 6648   2017.7

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    DOI: 10.1021/acs.energyfuels.6b03275

  • Studying Rotational Mobility of V=O Complexes in Atmospheric Residues and Their Resins and Asphaltenes by Electron Spin Resonance Invited Reviewed International journal

    Cui, Qingyan, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    ENERGY & FUELS   31 ( 5 )   4748 - 4757   2017.5

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    DOI: 10.1021/acs.energyfuels.6b03279

  • Structural elucidation of physical and chemical activation mechanisms based on the microdomain structure model Reviewed

    Doo Won Kim, Hyun Sig Kil, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    Carbon   114   98 - 105   2017.4

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    Activated carbons (ACs) prepared by chemical activation commonly show higher specific surface areas and higher yields than those prepared by physical activation. In this study, the differences in the pore development mechanisms between physical and chemical activation processes for AC preparation were studied from a structural point of view, based on the microdomain structure model. Phenol resin-based spherical carbon was used as the starting material. AC preparation via potassium hydroxide (KOH) activation (chemical activation) did not induce noticeable changes in the particle or microdomain sizes, despite the abundant development of pores. On the other hand, ACs produced via steam activation (physical activation) showed remarkable reductions in both particle and microdomain sizes, depending on the activation temperature. Considering the differences in activation yield and degree of developed porosity between chemical and physical activations, we concluded that, in the case of KOH activation, pore development homogeneously progressed overall for all microdomains consisting of carbon particles without apparent morphological change; however, steam activation caused inhomogeneous gasification from the outer surface of the carbon particles and microdomains. For this reason, KOH-ACs showed higher yield and superior pore development.

    DOI: 10.1016/j.carbon.2016.11.082

  • 1.Dimensional control of tubular-type carbon nanofibers via pyrolytic carbon coating Reviewed International journal

    Yuzo Ohata, Donghui Long, Wenming Qiao, Licheng Ling, Koji NAKABAYASHI, 宮脇 仁, Isao Mochida, 尹 聖昊

    1 - 14   2017.3

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  • Improvement of Electric Conductivity of Non-graphitizable Carbon Material via Breaking-down and Merging of the Microdomains Invited Reviewed International journal

    Doo-Won Kim, Hyun-Sig Kil, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    EVERGREEN Joint Journal of Novel Carbon Resource Sciences & Green Asia Strategy   4   2017.3

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  • Dimensional control of tubular-type carbon nanofibers via pyrolytic carbon coating Reviewed International journal

    Yuzo Ohata, Isao Mochida, Donghui Long, Wenming Qioa, Licheng Ling, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    Journal of Material Science   52 ( 9 )   5165 - 5178   2017.1

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  • Structural elucidation of physical and chemical activation mechanisms based on the microdomain structure model Reviewed International journal

    Doo-Won Kim, Hyun-Sig Kil, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    114   98 - 105   2016.11

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  • Electrochemical Polymerization on Porous Electrodes in Neat and Highly Concentrated Monomer Solutions Invited Reviewed International journal

    Eisaku TANAKA, Hiroyuki TATENO, Yoshimasa MATSUMURA, Koji NAKABAYASHI, Mahito ATOBE

    Chemistry letter   45   1271 - 1273   2016.10

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  • Preparation of isotropic spinnable pitch and carbon fiber by the bromination–dehydrobromination of biotar and ethylene bottom oil mixture Reviewed International journal

    Jianxiao Yang, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    Journal of Material Science   52 ( 2 )   1165 - 1171   2016.10

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  • Preparation of pitch based carbon fibers using Hyper-coal as a raw material Invited Reviewed International journal

    Jianxiao Yang, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    Carbon   106   28 - 36   2016.10

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  • Electrocatalytic Hydrogenation of o-Xylene in a PEM Reactor as a Study of a Model Reaction for Hydrogen Storage Reviewed International journal

    Ken Takano, Hiroyuki Tateno, Yoshimasa Matsumura, Atsushi Fukazawa, Tsuneo Kashiwagi, Koji NAKABAYASHI, Kensaku Nagasawa, Shigenori Mitsushima, Mahito Atobe

    Chemistry Letters   2016.9

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  • Influence of Pore Size and Surface Functionality of Activated Carbons on Adsorption Behaviors of Indole and Amylase Reviewed

    Jin Miyawaki, Joonyoung Yeh, Hyun-Sig Kil, Jihn Koo Lee, Koji Nakabayashi, Isao Mochida, Seong-Ho Yoon

    Evergreen : joint journal of Novel Carbon Resource Sciences & Green Asia Strategy   3 ( 2 )   17 - 24   2016.9

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    Influence of pore size and surface functionality of activated carbons on liquid-phase molecular adsorption behaviors was carefully investigated both in terms of adsorption capacity and kinetics using indole and amylase as model adsorptive bio-materials by individual single-component experiments to improve adsorptive removal efficiency and selectivity of body wastes. Activated carbon fibers having narrow pore size of about 0.65 nm showed the highest adsorption capability of indole per unit surface area. From the point of view of the adsorption rate, however, a little bit wider micropores of about 0.70 nm considered to be preferable. It was also confirmed that a presence of oxygen-containing surface functional groups induces diffusional inhibitions of indole molecules to deeper pore spaces, giving rise to a lowering both of adsorption capacity and rate of indole. On the other hand, amylase adsorption amount was limited for microporous carbons. Therefore, as for oral applications to selectively remove the wastes in the body such as indole but not for useful molecules such as amylase, the activated carbons having abundant micropores of about 0.7 nm in size and hydrophobic surfaces were found to be suitable from the individual single-component experiments.

  • Effect of heat pre-treatment conditions on the electrochemical properties of mangrove wood-derived hard carbon as an effective anode material for lithium-ion batteries Reviewed International journal

    Yu-Jin Han, Dabin Chung, Koji NAKABAYASHI, Jin-Do Chung, 宮脇 仁, 尹 聖昊

    Electrochimica Acta   432 - 438   2016.7

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  • Electrocatalytic Hydrogenation of Toluene Using a Proton Exchange Membrane Reactor Reviewed International journal

    Ken TAKANO, Hiroyuki TATENO, Yoshimasa MATSUMURA, Atsushi FUKAZAWA, Tsuneo KASHIWAGI, Koji NAKABAYASHI, Kensaku NAGASAWA, Shigenori MITSUSHIMA, Mahito ATOBE

    Bull Chem. Soc. Jpn   ( 89 )   1178 - 1183   2016.6

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  • C4F8 plasma treatment as an effective route for improving rate performance of natural/synthetic graphite anodes in lithium ion batteries Reviewed International journal

    Choonghyeon Lee, Yu-Jin Han, Young Deok Seo, Koji NAKABAYASHI, 宮脇 仁, Ricardo Santamaría, Rosa Menéndez, 尹 聖昊, Jyongsik Jang

    Carbon   103   28 - 35   2016.2

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  • Preparation of isotropic pitch-based carbon fiber using hyper coal through co-carbonation with ethylene bottom oil Reviewed

    Jianxiao Yang, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Journal of Industrial and Engineering Chemistry   34   397 - 404   2016.2

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    A spinnable pitch was developed from the tetrahydrofuran-soluble fractions (THFS) of hyper coal (HPC) and used to prepare carbon fibers. THFS-derived pitch from bituminous coal-derived HPC showed excellent spinnability and the obtained carbon fibers had a tensile strength of over 800. MPa with a diameter of 13. μm following heat treatment at 800. °C for 5. min. Thus, HPC was shown to be a useful alternative precursor for the preparation of low-cost and general-performance carbon fibers.

    DOI: 10.1016/j.jiec.2015.11.026

  • Electroresponsive Structurally Colored Materials from a Combination of Structural and Electrochromic Color Effects Reviewed International journal

    Tomoya KUNO, Yoshimasa MATSUMURA, Koji NAKABAYASHI, Mahito ATOBE

    Angew. Chem. Int. Ed.   55   2503 - 2506   2016.2

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    Electroresponsive structurally colored materials composed of ordered arrays of polyaniline@poly(methyl methacrylate) (PANI@PMMA) core-shell nanoparticles have been successfully prepared. The core-shell nanoparticles were synthesized by deposition of PANI shells on the surfaces of the PMMA cores by the oxidative polymerization of anilinium chloride. Ordered arrays were then fabricated by using the fluidic cell method. Because the ordered arrays and the PANI shells generate structural and electrochromic colors, respectively, these core-shell colloidal crystals exhibited colors resulting from the combined effects of these materials. The crystal colors depended greatly on the size of PANI@PMMA particles and could also be varied by the application of a voltage. The electrochromic colors of these arrays were found to be quite different from those exhibited by pure PANI films prepared by electrochemical oxidation.

  • Preparation of isotropic pitch-based carbon fiber using hyper coal through co-carbonation with ethylene bottom oil Reviewed International journal

    Jianxiao Yang, Koji NAKABAYASHI, 宮脇 仁, 尹 聖昊

    Journal of Industrial and Engineering Chemistry   34   397 - 404   2016.2

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  • Enhancement of the rate performance of plasma-treated platelet carbon nanofiber anodes in lithium-ion batteries Reviewed International journal

    Yu-Jin Han, Choonghyeon Lee, Young Deok Seo, Koji NAKABAYASHI, 宮脇 仁, Ricardo Santamaría, Rosa Menéndez, Jyongsik Jang, 尹 聖昊

    RSC Advances   6   4810 - 4817   2016.1

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  • Enhancing the tensile strength of isotropic pitch-based carbon fibers by improving the stabilization and carbonization properties of precursor pitch Reviewed International journal

    Byung-Jun Kim, Toru Kotegawa, Youngho Eom, Jungchul An, Ik-Pyo Hong, Osamu Kato, Koji NAKABAYASHI, 宮脇 仁, Byoung Chul Kim, 持田勲, 尹 聖昊

    Carbon   99   649 - 657   2015.12

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  • Development of a Novel Electrochemical Carboxylation System Using a Microreactor Reviewed International journal

    Hiroyuki TATENO, Yoshimasa MATSUMURA, Koji NAKABAYASHI, Hisanori SENBOKU, Mahito ATOBE

    RSC Advances   5   98721 - 98723   2015.10

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  • Coating of graphite anode with coal tar pitch as an effective precursor for enhancing the rate performance in Li-ion batteries: Effects of composition and softening points of coal tar pitch Reviewed International journal

    Yu-Jin Han, Jandee Kim, Jae-Seong Yeo, Jung Chul An, Ik-Pyo Hong, Koji NAKABAYASHI, 宮脇 仁, Jin-Do Jung, 尹 聖昊

    Carbon   94   432 - 438   2015.7

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  • An anodic aromatic C,C cross-coupling reaction using parallel laminar flow mode in a flow microreactor Reviewed International journal

    Toshihiro ARAI, Hiroyuki TATENO, Koji NAKABAYASHI, Tsuneo KASHIWAGI, Mahito ATOBE

    Chemical Communications   51   4891 - 4894   2015.2

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  • Electrochemical fixation of CO2 to organohalides in room-temperature ionic liquids under supercritical CO2 Reviewed International journal

    Hiroyuki TATENO, Koji NAKABAYASHI, Tsuneo KASHIWAGI, Hisanori SENBOKU, Mahito ATOBE

    Electrochimica Acta   161   212 - 218   2015.1

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  • Size-controlled Spherical Polymer Nanoparticles: Synthesis with Tandem Acoustic Emulsification Followed by Soap-free Emulsion Polymerization and One-step Fabrication of Colloidal Crystal Films of Various Colors Invited Reviewed International journal

    Koji NAKABAYASHI, Yuki HIRAI, Maya KOJIMA, Mahito ATOBE

    Ultrason. Sonochem.   21巻   1921 - 1927   2014.11

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  • Preparation of W/O Nanoemulsion Using Tandem Acoustic Emulsification and Its Novel Utilization as a Medium for Phase-Transfer Catalytic Reaction Reviewed International journal

    Koji NAKABAYASHI, Hiroyuki YANAGI, Mahito ATOBE

    RSC Advances   4巻   57608 - 57610   2014.10

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  • Templated Electrochemical Synthesis of Conducting Polymer Nanowires in the Corresponding Monomer Nanoemulsions Prepared by Tandem Acoustic Emulsification Reviewed International journal

    Koji NAKABAYASHI, Mahito ATOBE

    RSC Advances   4巻   22938 - 22940   2014.5

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  • Tandem Acoustic Emulsion, an Effective Tool for the Electrosynthesis of Highly Transparent and Conductive Polymer Films Invited Reviewed International journal

    Koji NAKABAYASHI, Toshio FUCHIGAMI, Mahito ATOBE

    Electrochim. Acta   110   593 - 598   2013.11

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Size-Controlled Synthesis of Polymer Nanoparticles with Tandem Acoustic Emulsification Followed by Soap-Free Emulsion Polymerization Reviewed International journal

    Koji NAKABAYASHI, Maya KOJIMA, Shinsuke INAGI, Yuki HIRAI, Mahito ATOBE

    ACS Macro Lett.   2   482 - 484   2013.6

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  • Electrochemical and Photoelectrochemical Behaviors of Polythiophene Nanowires Prepared by Templated Electrodeposition in Supercritical Fluids Reviewed

    Ken SAKAMOTO, Koji NAKABAYASHI, Toshio FUCHIGAMI, Mahito ATOBE

    Electrochemistry   81   328 - 330   2013.5

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  • Morphological and Electrochemical Properties of 3,4-Substitued Polythiophene Films Prepared by Electrochemical Polymerization Reviewed

    Keigo FURUTA, Hiroya KOYAMA, Seiji HONMA, Koji NAKABAYASHI, Mahito ATOBE

    Electrochemistry   81   334 - 336   2013.5

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  • Highly Clear and Transparent Nanoemulsion Preparation under Surfactant-Free Conditions Using Tandem Acoustic Emulsification Reviewed International journal

    Koji NAKABAYASHI, Fumihiro AMEMIYA, Toshio FUCHIGAMI, Kenji MACHIDA, Sekihiro TAKEDA, Kenji TAMAMITSU, Mahito ATOBE

    Chemical Communications   47   5765 - 5667   2011.4

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  • Electrochemical Reaction of Water-insoluble Organic Droplets in Aqueous Electrolytes Using Acoustic Emulsification Reviewed International journal

    Mahito ATOBE, Shintaro IKARI, Koji NAKABAYASHI, Fumihiro AMEMIYA, Toshio FUCHIGAMI

    Langmuir   26   9111 - 9115   2010.2

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Books

  • アグリバイオ

    中林康治(Role:Edit)

    北隆館  2018.7 

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    Responsible for pages:アグリバイオ「二酸化炭素を利用したカーボンナノファイバー合成への挑戦」   Language:Japanese   Book type:Scholarly book

  • 超音波テクノ、タンデム超音波乳化法によるポリマーナノ粒子の粒径制御型合成およびコロイド結晶幕への応用

    Yuki HIRAI, Koji NAKABAYASHI, Mahito ATOBE

    日本工業出版  2014.7 

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    Language:Japanese   Book type:General book, introductory book for general audience

  • 第1章 第2節 超音波を利用する導電性高分子材料の形態制御, 導電性ポリマー材の高機能化と用途開発最前線

    Koji NAKABAYASHI, Mahito ATOBE(Role:Joint author)

    エヌ・ティー・エス  2014.6 

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    Responsible for pages:頁 23-30   Language:Japanese   Book type:Scholarly book

  • 超音波乳化法を用いたEDOTナノエマルション溶液の創成と電解重合への応用, "PEDOTの材料物性とデバイス応用"

    Mahito ATOBE, Koji NAKABAYASHI(Role:Joint author)

    サイエンス&テクノロジー  2012.3 

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    Responsible for pages:頁 34-41   Language:Japanese   Book type:Scholarly book

Presentations

  • ⾼機能メソフェーズピッチ系炭素繊維の低コスト化戦略 Invited

    島ノ江 明⽣, 真塩 昂志, 都丸 ⼤晟, 中林 康治, 宮脇 仁, 尹 聖昊

    第49 回 炭素材料学会年会  2022.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:姫路市市民会館   Country:Japan  

  • 炭素材料で炭素循環社会を創る Invited

    中林康治、宮脇仁、尹聖昊

    第47回炭素材料学会年会  2020.12 

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    Event date: 2021.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

    発表では、主に炭素循環社会における炭素材料の応用、発展、展望などの話を網羅的に講演した。

  • Current and future carbon technologies International conference

    Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Workshop on Sustainable Processes in Civil and Chemical Engineering in Department of Civil Engineering, BITS Pilani-Hyderabad Campus in India  2019.11 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:India   Country:India  

  • 座礁資源から炭素材料を創る Invited

    中林康治

    CPC研究会  2023.12 

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    Event date: 2024.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京   Country:Japan  

  • 未利用炭素資源で炭素循環社会を創る〜座礁資源の高度利用〜 Invited

    中林康治

    九州大学学術研究都市セミナーin 東京  2023.12 

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    Event date: 2024.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  • 残渣から作る炭素繊維〜炭素循環社会の実現を目指して〜 Invited

    中林 康治、 宮脇 仁、 尹 聖昊

    第52回繊維学会夏期セミナー  2023.8 

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    Event date: 2024.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  • 座礁資源で炭素繊維を作る Invited

    中林 康治

    第3回 サーキュラーエコノミーコンポジット研究会  2024.1 

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    Event date: 2024.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:岐阜大学   Country:Japan  

  • 紡糸用メソフェーズピッチの溶媒成分が異方性組織や黒鉛化性に及ぼす影響

    島ノ江 明生、中林 康治、宮脇 仁、尹 聖昊

    第48回炭素材料学会年会  2021.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Carbon recycling society created with carbon materials International conference

    Koji Nakabayashi, Hiroki Shimanoe, Taisei Tomaru, Jianxiao Yang, Jin Miyawaki, Seong-Ho Yoon

    2023.7 

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    Event date: 2023.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:メキシコ   Country:Mexico  

  • 残渣から作り上げる炭素繊維 Invited

    中林 康治、 宮脇 仁、 尹 聖昊

    炭素材料学会セミナー  2023.1 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Effect of solvent component on the anisotropic texture and mechanical properties of spinnable mesophase pitch

    Hiroki Shimanoe, Takashi Mashio, Taisei Tomaru, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    The World Conference on Carbon(Carbon 2022)  2022.7 

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    Event date: 2023.5

    Language:Japanese  

    Country:Japan  

  • Correlation between the anisotropic texture and the molecular stacking property in spinnable mesophase pitch

    Hiroki Shimanoe, Takashi Mashio, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    The World Conference on Carbon(Carbon 2022)  2022.7 

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    Event date: 2023.5

    Language:Japanese  

    Country:Japan  

  • Effect of heat treatment methods on the preparation of solvent component for the spinnable mesophase pitch International conference

    Takashi Mashio, Taisei Tomaru, Hiroki Shimanoe, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    The World Conference on Carbon(Carbon 2022)  2022.7 

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    Event date: 2023.5

    Language:Japanese  

    Country:Japan  

  • Development of high-performance adsorption heat pump using pressurized physically activated carbon

    Hyeonseok Yi, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    The World Conference on Carbon(Carbon 2022)  2022.7 

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    Event date: 2023.5

    Language:Japanese  

    Country:Japan  

  • Preparation of solvent component of spinnable mesophase pitch using ethylene bottom oil as raw material

    Takashi Mashio, Taisei Tomaru, Hiroki Shimanoe, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    The World Conference on Carbon(Carbon 2022)  2022.7 

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    Event date: 2023.5

    Language:Japanese  

    Country:Japan  

  • 二酸化炭素/プロパンガスを⽤いた炭素ナノ繊維合成における反応メカニズムに関する研究

    徳丸 貴哉, 中林 康治, 宮脇 仁, 尹 聖昊

    第49 回 炭素材料学会年会  2022.12 

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    Event date: 2022.12

    Language:Japanese  

    Country:Japan  

  • エチレンボトムオイルを⽤いた等⽅性ピッチの調製とそのリオトロピック液晶ピッチにおける溶媒機能

    都丸 ⼤晟, 真塩 昂志, 島ノ江 明⽣, 中林 康治, 宮脇 仁, 尹 聖昊

    第49 回 炭素材料学会年会  2022.12 

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    Event date: 2022.12

    Language:Japanese  

    Country:Japan  

  • Preparation of solvent component of spinnable mesophase pitch using ethylene bottom oil through the bromination-debromination reaction International conference

    Taisei Tomaru, Takashi Mashio, Hiroki Shimanoe, Seung-Jae Ha, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    The World Conference on Carbon(Carbon 2022)  2022.7 

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    Event date: 2022.7

    Language:Japanese  

    Country:Japan  

  • ハロゲンガスを用いたピッチ系炭素繊維の新規不融化工程の開発

    古志 泰滉、島ノ江 明生、中林 康治、宮脇 仁、尹 聖昊

    第48回炭素材料学会年会  2021.12 

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    Event date: 2021.12

    Language:Japanese  

    Country:Japan  

  • 黒鉛電極用高炭素化収率石油系ヘテロバインダーピッチの開発

    曹 碩、彭 元碩、中林 康治、宮脇 仁、尹 聖昊

    第48回炭素材料学会年会  2021.12 

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    Event date: 2021.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 溶媒成分の熱処理による熱可溶性液晶ピッチの諸物性への影響

    真塩 昂志、都丸 大晟、島ノ江 明生、尹 聖昊、宮脇 仁

    第48回炭素材料学会年会  2021.12 

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    Event date: 2021.12

    Language:Japanese  

    Country:Japan  

  • 黒鉛電極用バインダーピッチのヘテロ化による電極の収率および強度への影響

    小野 皓平、成 民基、中林 康治、宮脇 仁、尹 聖昊

    第48回炭素材料学会年会  2021.12 

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    Event date: 2021.12

    Language:Japanese  

    Country:Japan  

  • 二酸化炭素/プロパンガス共存下2段階反応による炭素ナノ繊維の高収率調製

    徳丸 貴哉、中林 康治、宮脇 仁、尹 聖昊

    第48回炭素材料学会年会  2021.12 

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    Event date: 2021.12

    Language:Japanese  

    Country:Japan  

  • 加圧物理賦活法で製造した活性炭の吸脱着式ヒートポンプへの応用

    李 炫錫、中林 康治、尹 聖昊、宮脇 仁

    第48回炭素材料学会年会  2021.12 

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    Event date: 2021.12

    Language:Japanese  

    Country:Japan  

  • PAN系活性炭素繊維における水蒸気による吸着阻害メカニズムの解明

    田中 勇渡、下林 佑輝、下原 孝章、中林 康治、尹 聖昊、宮脇 仁

    第48回炭素材料学会年会  2021.12 

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    Event date: 2021.12

    Language:Japanese  

    Country:Japan  

  • Study on the development of carbon coated alimina support for hydrodemetallization Invited International conference

    Koji Nakabayashi, Jin Miyawaki, Seng-Ho Yoon

    ICIMECE 2020 in Indonesia  2020.10 

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    Event date: 2021.6

    Language:English  

    Country:Japan  

  • 先端産業のキー材料としての炭素材料~未来に向けてのインダストリアル炭素~ Invited

    中林康治、宮脇仁、尹聖昊

    日本鉄鋼協会、製鉄と炭素資源・エネルギー利用に係る新技術  2020.1 

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    Event date: 2021.6

    Language:Japanese  

    Country:Japan  

  • Investigation of dry sludges generation mechanism by using Raman spectroscopy International conference

    Koji Nakabayashi, Hideki Nakashima, Takashi Mashio, Kazuki Ito, Jin Miyawaki, Seong-ho Yoon , Seiichi Yamamoto, Toshiaki Okui,Eiji Kawai, Shigetaka Fujii, Hideki Sato, Toru Takatsuka

    Petrophase2019  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Country:Japan  

  • 二酸化炭素を利用したCNF合成に関する研究 International conference

    中林 康治、磯本 和也、宮脇 仁、尹 聖昊

    28th Annual Meeting of MRS-Japan  2018.12 

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    Event date: 2018.12

    Language:Japanese  

    Venue:ミクニワールドスタジアム北九州   Country:Japan  

  • 炭素材料の基となる化石資源の現状と発展 Invited

    中林康治

    第57回炭素材料学会夏季セミナー  2018.9 

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    Event date: 2018.9

    Language:Japanese  

    Country:Japan  

  • Preparation of tin oxide nanofibers using carbon nanofibers as a template and its application to secondary battery International conference

    Koji Nakabayashi, Sho Yoshida, Jin Miyawaki,Seong-Ho Yoon

    Carbon2018  2018.7 

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    Event date: 2018.7

    Language:Japanese  

    Country:Spain  

  • Pressurized physical activation: efficient and facile production method of highly porous activated carbons,Hyeonseok International conference

    Hyeonseok Yi, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    Carbon2018  2018.7 

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    Event date: 2018.7

    Language:Japanese  

    Country:Spain  

  • Preparation of mesophase pitch derived from hyper-coal with high yield International conference

    Koji Nakabayashi, Toshinori Inoue, Maki Hamaguchi,Hiroki Shimanoe, Jin Miyawaki, Seong-Ho Yoon

    Carbon2018  2018.7 

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    Event date: 2018.7

    Language:Japanese  

    Country:Spain  

  • The oxidative stabilization of isotropic pitch fiber under pressure

    Koji Nakabayashi, Jinchang Liu, Hiroki Shimanoe, Jin Miyawaki,Seong-Ho Yoon

    Carbon2018  2018.7 

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    Event date: 2018.7

    Language:Japanese  

    Country:Spain  

  • Developing enhanced anode materials for lib with hyper coal coating on the graphite surface International conference

    Koji Nakabayashi, Dabin Chung, Jin Miyawaki, Seong-Ho Yoon

    Carbon2018  2018.7 

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    Event date: 2018.7

    Language:Japanese  

    Country:Spain  

  • Anodic performance of biomass-derived hard carbon structure for Na-ion batteries International conference

    Dabin Chung, Yujin Han, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Carbon2017  2017.7 

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    Event date: 2017.7

    Language:English  

    Venue:Melbourne   Country:Japan  

  • Effective stabilization of isotropic pitch fiber under pressurizede atomosphere International conference

    Hiroki Shimanoe, Shoki Tanaka, Osamu Kato, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Carbon2017  2017.7 

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    Event date: 2017.7

    Language:Japanese  

    Country:Australia  

  • Preparation of activated carbon by pressurized physical activation

    Hyeonseok Yi, Hiroki Shimanoe, Doowon Kim, Yao Yu, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki

    Carbon2017  2017.7 

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    Event date: 2017.7

    Language:Japanese  

    Country:Australia  

  • Preparation of isotropic pitch through co-carbonization of EO and PVC International conference

    Jinchang Liu, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Carbon2017  2017.7 

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    Event date: 2017.7

    Language:English  

    Country:Australia  

  • Preparation of spinnable mesophase pitch using hyper-coal as raw material International conference

    Hiroki Shimanoe, Toshinori Inoue, Maki Hamaguchi, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon

    Carbon2017  2017.7 

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    Event date: 2017.7

    Language:English  

    Country:Australia  

  • EFFECT OF LOW TEMPERATURE PRE-HEAT TREATMENT ON THE ELECTROCHEMICALANODIC PERFORMANCES OF BIOMASS-DERIVED HARD CARBONS IN SODIUM ION BATTERIES International conference

    Koji NAKABAYASHI, Yu-jin Han, Keiko IDETA, Jin Miyawaki, 尹 聖昊

    Carbon2016  2016.7 

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    Event date: 2016.7

    Language:English  

    Venue:Pennstate   Country:United States  

  • STUDY ON STRUCTURE-SELECTIVE PRODUCTION OF CARBON NANOFIBERS International conference

    Koji NAKABAYASHI, Kazunari TESHIMA, Kazuya ISOMOTO, Jin Miyawaki, Isao MOCHIDA, 尹 聖昊

    Carbon2016  2016.7 

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    Event date: 2016.7

    Language:English  

    Venue:Pennstate   Country:United States  

  • PORE SIZE OPTIMIZATION OF HIGH VOLTAGE OPERATING EDLC ELECTRODE BASED ON QUANTITATIVE SOLID-STATE NMR ANALYSIS International conference

    Koji NAKABAYASHI, Keioko Ideta, Jin Miyawaki, 尹 聖昊

    Carbon 2016  2016.7 

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    Event date: 2016.7

    Language:English  

    Venue:Pennstate   Country:United States  

  • 種々の粒径を有するPANI-PMMAナノコンポジット粒子の合成とコロイド結晶への応用

    久野友也, 小泉裕貴, Koji NAKABAYASHI, 跡部真人

    第23回ソノケミストリー討論会  2014.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:秋田市にぎわい交流館AU多目的ホール   Country:Japan  

  • タンデム超音波乳化法を利用した新規陽極置換反応

    小川義幸, 舘野拓之, Koji NAKABAYASHI, 跡部真人

    第23回ソノケミストリー討論会  2014.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:秋田市にぎわい交流館AU多目的ホール   Country:Japan  

  • タンデム超音波乳化法および凍結重合を利用したポリマー微粒子の粒径制御型合成

    Koji NAKABAYASHI, 平井友基, 跡部真人

    第23回ソノケミストリー討論会  2014.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:秋田市にぎわい交流館AU多目的ホール   Country:Japan  

  • PEMリアクターを用いたトルエン及びその類縁体の電気化学的水素添加反応

    高野拳, 柏木恒雄, Koji NAKABAYASHI, 光島重徳, 跡部真人

    第38回電解技術討論会  2014.11 

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    Venue:埼玉大学   Country:Japan  

  • 超臨界二酸化炭素-イオン液体系における有機化合物の電解カルボキシル化

    舘野拓之, Koji NAKABAYASHI, 仙北久典, 跡部真人

    第68回有機合成化学協会関東シンポジウム  2014.11 

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    Venue:新潟大学   Country:Japan  

  • フローマイクロリアクターを用いた環境調和型電解カルボキシル化システムの開発

    舘野拓之, Koji NAKABAYASHI, 仙北久典, 跡部真人

    電気化学会第82回大会  2015.3 

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    Venue:横浜国立大学   Country:Japan  

  • 超音波により作製したナノバブルをテンプレートとしたPPy中空微粒子の作製

    田嶋彩香, 小川義幸, Koji NAKABAYASHI, 跡部真人

    電気化学会第82回大会  2015.3 

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    Venue:横浜国立大学   Country:Japan  

  • 超音波発砲を利用した多孔質ポリピロール材料の電解合成

    末安由佳, Koji NAKABAYASHI, 跡部真人

    電気化学会第82回大会  2015.3 

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    Venue:横浜国立大学   Country:Japan  

  • Electrochemical fixation of CO2 to organohalides in room-temperature ionic liquids under supercritical CO2 circumstances

    Hiroyuki TATENO, Koji NAKABAYASHI, Hisanori SENBOKU, Mahito ATOBE

    日本化学会第95春季年会  2015.3 

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    Venue:日本大学   Country:Japan  

  • ニートモノマー溶液からの電解重合法の開発及び固体型色素増感太陽電池への応用

    田中栄作, Koji NAKABAYASHI, 跡部真人

    日本化学会第95春季年会  2015.3 

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    Venue:日本大学   Country:Japan  

  • CO2混合炭素源ガスからの炭素ナノ繊維の構造選択的調製

    尹 聖昊, 手島一成, Koji NAKABAYASHI, 松尾賢典, 磯本和也, 池田基, 宮脇 仁

    附置研究所間アライアンスによるナノとマクロをつなぐ物質・デバイス・シス テム創製戦略プロジェクト  2015.4 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • フローマイクロリアクターを用いたベンジルハライド類の電解カルボキシル化

    舘野拓之, Koji NAKABAYASHI, 仙北久典, 跡部真人

    第69回有機合成化学協会関東支部シンポジウム  2015.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:横浜国立大学   Country:Japan  

  • 超臨界二酸化炭素雰囲気下におけるイオン液体中での有機ハロゲン化物の電解カルボキシル化

    舘野拓之, Koji NAKABAYASHI, 跡部真人, 仙北久典

    第4回CSJ化学フェスタ2014  2014.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:タワーホール船堀   Country:Japan  

  • タンデム超音波乳化法を利用した疎水性モノマーの電解重合

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    電気化学会第77回大会  2010.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山大学   Country:Japan  

  • タンデム超音波乳化法を利用した透明モノマーエマルション溶液の創製と電解重合への応用

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    第34回有機電子移動化学討論会  2010.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪府立大学   Country:Japan  

  • タンデム超音波乳化法を利用した疎水性モノマーエマルション溶液の透明化と、電解重合への応用

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    第20回電極材料研究会  2010.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • タンデム超音波乳化法を利用した透明モノマーエマルション溶液の創製と電解重合への応用に関する研究

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    電気化学会関東支部夏の学校  2010.8 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:八王子セミナーハウス   Country:Japan  

  • タンデム超音波乳化法を利用した疎水性液滴から成るエマルション水溶液の透明化と電解重合への応用

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    2010年電気化学秋季大会  2010.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川工科大学   Country:Japan  

  • タンデム超音波乳化法を利用した疎水性液滴から成るエマルション水溶液の透明化と電解重合への応用に関する研究

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    第19回ソノケミストリー討論会  2010.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • A novel electropolymerization of water-insoluble monomer in aqueous electrolytes using tandem acoustic emulsification International conference

    Koji NAKABAYASHI, Kenji Matida, Sekihiro Takeda, Kenji Tamamithu, Toshio Fuchigami, Mahito Atobe

    2010 International Chemical Congress of Pacific Basic Societies  2010.12 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Honolulu, Hawaii, USA   Country:United States  

  • タンデム超音波乳化法を利用した疎水性モノマーのナノエマルション溶液の作製、物性ならびに電解重合への応用

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    電気化学会第78回大会  2011.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:横浜国立大学   Country:Japan  

  • タンデム超音波乳化法を利用したポリマー微粒子の合成と粒径制御に関する研究

    小島真耶, Koji NAKABAYASHI, 雨宮史尋, 淵上寿雄, 跡部真人

    日本化学会第91春季年会  2011.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川大学   Country:Japan  

  • タンデム超音波乳化を利用する相関移動触媒反応の促進効果

    柳宏幸, Koji NAKABAYASHI, 雨宮史尋, 淵上寿雄, 跡部真人

    日本化学会第91春季年会  2011.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川大学   Country:Japan  

  • タンデム超音波乳化法を利用した透明ナノエマルションの創製と電解重合への応用

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    日本化学会第91春季年会  2011.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川大学   Country:Japan  

  • タンデム超音波乳化法を利用したポリマー微粒子の合成と粒径制御

    小島真耶, Koji NAKABAYASHI, 雨宮史尋, 淵上寿雄, 跡部真人

    第35回有機電子移動化学討論会  2011.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • タンデム超音波乳化法を利用する透明エマルション溶液の作製とその応用

    Koji NAKABAYASHI, 町田健治, 武田積洋, 玉光賢次, 跡部真人

    第35回有機電子移動化学討論会  2011.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • Enhancement of the phase-transfer catalytic reaction by using tandem acoustic emulsification International conference

    Hiroyuki Yanagi, Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    2011 The 20th Annual Meetig of the Japan Society of Sonochemistry  2011.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nagoya University   Country:Japan  

  • Study on particle size-controlled synthesis of polymer nanoparticles using tandem acoustic emulsification International conference

    Maya Kojima, Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    2011 The 20th Annual Meetig of the Japan Society of Sonochemistry  2011.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nagoya University   Country:Japan  

  • Preparetion of transparent nano-emulsion using tandem acoustic emulsification and its application to electropolymerization International conference

    Koji NAKABAYASHI, Kenji Matida, Sekihiro Takeda, Kenji Tamamithu, Toshio Fuchigami, Mahito Atobe

    2011 The 20th Annual Meetig of the Japan Society of Sonochemistry  2011.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nagoya University   Country:Japan  

  • Electrochemical reaction of water-insoluble organic droplets in aqueous electrolytes using acoustic emulsification International conference

    Mahito Atobe, Koji NAKABAYASHI, Ikari Shintaro, Toshio Fuchigami

    The 20th Annual Meetig of the Japan Society of Sonochemistry  2011.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nagoya University   Country:Japan  

  • Preparetion of clear and transparent nanoemulsions using tandem acoustic emulsification and their application to electropolymerization International conference

    Koji NAKABAYASHI, Kenji Matida, Sekihiro Takeda, Kenji Tamamithu, Toshio Fuchigami, Mahito Atobe

    2011 The 10th International Symposium on Organic Reactions  2011.11 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Keio University   Country:Japan  

  • タンデム超音波乳化を利用するW/Oナノエマルションの創成と相関移動触媒反応への応用

    跡部真人, 柳宏幸, Koji NAKABAYASHI, 淵上寿雄

    日本化学会第92春季年会  2012.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:慶応義塾大学   Country:Japan  

  • タンデム超音波乳化法を利用した透明ナノエマルションの創成とテンプレート電解重合への応用

    Koji NAKABAYASHI, 渕上寿雄, 跡部真人

    日本化学会第92春季年会  2012.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:慶応義塾大学   Country:Japan  

  • タンデム超音波乳化法を利用したポリマー微粒子の合成と構造色材料への応用

    Koji NAKABAYASHI, 小島真耶, 渕上寿雄, 跡部真人

    日本化学会第92春季年会  2012.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:慶応義塾大学   Country:Japan  

  • タンデム式超音波乳化を利用する分散剤フリーナノエマルション溶液の創成とその応用

    跡部真人, 小島真耶, Koji NAKABAYASHI, 淵上寿雄

    電気化学会第79回大会  2012.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:浜松アクトシティー   Country:Japan  

  • タンデム超音波乳化法を利用した EDOT モノマーナノエマルションの創成とテンプレート電解重合への応用

    Koji NAKABAYASHI, 渕上寿雄, 跡部真人

    電気化学会第79回大会  2012.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:浜松アクトシティー   Country:Japan  

  • フローマイクロリアクターを利用した電解発生塩基の生成と合成的利用

    山地敬之, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第12回GSCシンポジウム  2012.6 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:ベルサール神田   Country:Japan  

  • マイクロリアクターを用いたオリゴチオフェンの電解合成

    仁藤謙, 柏木恒雄, Koji NAKABAYASHI, 跡部真人

    第12回GSCシンポジウム  2012.6 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:ベルサール神田   Country:Japan  

  • タンデム式超音波乳化法を用いた疎水性有機基質のエマルション電解

    小泉徹, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第12回GSCシンポジウム  2012.6 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:ベルサール神田   Country:Japan  

  • タンデム超音波乳化法を利用した透明ナノエマルション溶液の作製と電解重合への応用に関する研究

    Koji NAKABAYASHI, 渕上壽雄, 跡部真人

    第12回GSCシンポジウム  2012.6 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:ベルサール神田   Country:Japan  

  • タンデム超音波乳化法を利用する分散在フリーナノエマルション溶液の創成とその応用に関する研究

    Koji NAKABAYASHI, 小島真耶, 柳宏幸, 渕上寿雄, 跡部真人

    第36回有機電子移動化学討論会  2012.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:ルミエール府中   Country:Japan  

  • Preparation of EDOT monomer nanoemulsions using tandem acoustic emulsificatio nand their application to template electrochemical polymerization International conference

    Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    The 3rd German- Japanese Symposium on Electrosynthesis  2012.8 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Mainz   Country:Germany  

  • Study on the preparation of EDOT monomer nano-emulsion using tandem acoustic emulsification and its application to template electrochemical polymerization International conference

    Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    63rd Annual Meeting of the International Society of Electrochemistry in Prague  2012.8 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Prague   Country:Czech Republic  

  • Preparation of nanoemulsion using tandem acoustic emulsification and its application to templated electropolymerization International conference

    Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    PRiME 2012  2012.10 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Hawaii   Country:United States  

  • タンデム超音波乳化法を利用したEDOTモノマーナノエマルション溶液の作製と電解重合への応用

    Koji NAKABAYASHI, 渕上壽雄, 跡部真人

    第2回CSJ化学フェスタ2012  2012.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京工業大学   Country:Japan  

  • フローマイクロリアクターを用いたオリゴチオフェンの電解合成

    仁藤謙, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第2回CSJ化学フェスタ2012  2012.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京工業大学   Country:Japan  

  • タンデム式超音波乳化法を利用した疎水性有機基質のエマルション電解合成

    小泉徹, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第2回CSJ化学フェスタ2012  2012.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京工業大学   Country:Japan  

  • マイクロリアクターを用いた電解発生塩基の生成と合成的利用

    山地敬之, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第2回CSJ化学フェスタ2012  2012.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京工業大学   Country:Japan  

  • タンデム式超音波乳化法を用いたフマル酸ジエチルのエマルション電解反応

    小泉徹, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第21 回ソノケミストリー討論会  2012.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:明治大学   Country:Japan  

  • タンデム超音波照射によって得られた疎水性モノマーナノエマルションのテンプレート電解重合に関する研究

    Koji NAKABAYASHI, 渕上壽雄, 跡部真人

    第21 回ソノケミストリー討論会  2012.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:明治大学   Country:Japan  

  • タンデム超音波乳化法を用いたPMMA微粒子の粒径制御型合成と構造色材料への応用

    平井友基, 小島真耶, Koji NAKABAYASHI, 跡部真人

    第21 回ソノケミストリー討論会  2012.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:明治大学   Country:Japan  

  • フローマイクロリアクターによる電解発生塩基の生成と合成的利用

    山地敬之, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    日本化学会第93春季年会  2013.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:立命館大学   Country:Japan  

  • タンデム式超音波乳化法を利用したフマル酸ジエチルのエマルション電解還元反応

    小泉徹, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    日本化学会第93春季年会  2013.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:立命館大学   Country:Japan  

  • タンデム超音波乳化法によるPMMA微粒子の粒径制御型合成と構造色材料への応用

    平井友基, 小島真耶, Koji NAKABAYASHI, 跡部真人

    日本化学会第93春季年会  2013.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:立命館大学   Country:Japan  

  • ポリアニリン-ポリスチレン複合ナノ粒子の合成と構造色材料への応用

    小泉裕貴, Koji NAKABAYASHI, 跡部真人

    電気化学会第80回大会  2013.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学川内キャンパス   Country:Japan  

  • マイクロリアクターを用いたオリゴチオフェンの電解合成

    仁藤謙, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    電気化学会第80回大会  2013.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学川内キャンパス   Country:Japan  

  • タンデム超音波乳化法によるPMMAナノ微粒子の粒径制御型合成と構造色材料への応用に関する研究

    平井友基, 小島真耶, Koji NAKABAYASHI, 跡部真人

    第13回GSCシンポジウム  2013.6 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:メルパルク大阪   Country:Japan  

  • タンデム式超音波乳化を利用した疎水性有機化合物のエマルション電解反応

    小泉徹, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第37回有機電子移動化学討論会  2013.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • フローマイクロリアクターを利用した単分散性オリゴチオフェンの電解重合

    仁藤謙, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第37回有機電子移動化学討論会  2013.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • タンデム超音波乳化法を利用した固体型色素増感太陽電池の創製

    Koji NAKABAYASHI, 渕上壽雄, 跡部真人

    2013年電気化学秋季大会  2013.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • タンデム超音波乳化法を利用したPMMA微粒子の粒径制御型合成およびコロイド結晶膜への応用

    平井友基, Koji NAKABAYASHI, 跡部真人

    第3回CSJ化学フェスタ2013  2013.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:タワーホール船堀   Country:Japan  

  • タンデム式超音波乳化法によるポリマーナノ微粒子の粒径制御型合成およびコロイド結晶膜への応用

    平井友基, Koji NAKABAYASHI, 跡部真人

    第22 回ソノケミストリー討論会  2013.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  • タンデム式超音波乳化法を用いた疎水性有機化合物のエマルション電解

    小泉徹, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第22 回ソノケミストリー討論会  2013.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  • タンデム超音波乳化法を利用したDSSC用固体高分子電解質の創製に関する研究

    Koji NAKABAYASHI, 跡部真人

    第22 回ソノケミストリー討論会  2013.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  • タンデム超音波乳化法を利用したテンプレート電解重合ならびに固体型色素増感太陽電池への応用

    Koji NAKABAYASHI, 跡部真人

    第37回電解技術討論会  2013.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪府立大学 I-siteなんば   Country:Japan  

  • Templated electrochemical synthesis of PEDOT nanowires in monomer nanoemulsion prepared by tandem acoustic emulsification International conference

    Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    ISOR-11  2013.11 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Taipei   Country:Taiwan, Province of China  

  • Study on the size-controlled synthesis of PMMA nanoparticles with tandem acoustic emulsification followed by soap-free emulsion polymerization International conference

    Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    International Symposium on Integrated Synthesis-8  2013.11 

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    Venue:Nara   Country:Japan  

  • Study on the preparation of water-insoluble monomer nanoemulsion under surfactant-free conditions using tandem acoustic emulsification: application to chemical and electrochemical polymerization International conference

    Koji NAKABAYASHI, Toshio Fuchigami, Mahito Atobe

    The 4th German- Japanese Symposium on Electrosynthesis  2013.12 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:kyoto univ.   Country:Japan  

  • タンデム超音波乳化法を利用した疎水性有機化合物のエマルション電解反応に関する研究

    Koji NAKABAYASHI, 小泉徹, 柏木恒雄, v

    日本化学会第94春季年会  2014.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  • タンデム超音波乳化法を用いた新規陽極置換反応システムの開発

    小川義幸, 舘野拓之, 柏木恒雄, Koji NAKABAYASHI, 跡部真人

    電気化学会第81回大会  2014.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学千里山キャンパス   Country:Japan  

  • 有機電解合成の反応場を指向した超臨界二酸化炭素中におけるイオン液体の電気化学的性質の評価

    舘野拓之, 柏木恒雄, Koji NAKABAYASHI, 跡部真人, 仙北久典

    電気化学会第81回大会  2014.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学千里山キャンパス   Country:Japan  

  • ニートモノマー溶液からの電解重合法の開発と特性評価(1)

    田中栄作, Koji NAKABAYASHI, 跡部真人

    電気化学会第81回大会  2014.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学千里山キャンパス   Country:Japan  

  • 種々の粒径を有するPMMA-PANIコロイド粒子の合成とコロイド結晶への応用

    久野友也, 小泉裕貴, Koji NAKABAYASHI, 跡部真人

    電気化学会第81回大会  2014.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学千里山キャンパス   Country:Japan  

  • PEMリアクターを用いたトルエンの電気化学的水素添加反応(1)

    高野拳, 柏木恒雄, Koji NAKABAYASHI, 跡部真人, 光島重徳

    電気化学会第81回大会  2014.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学千里山キャンパス   Country:Japan  

  • ニートモノマー溶液からの電解重合法の開発と特性評価

    田中栄作, Koji NAKABAYASHI, 跡部真人

    第3回JACI/GSCシンポジウム  2014.5 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京国際フォーラム   Country:Japan  

  • PEMリアクターを用いたトルエンの電気化学的水素添加反応に関する研究

    高野拳, Koji NAKABAYASHI, 柏木恒雄, 跡部真人, 光島重徳

    第3回JACI/GSCシンポジウム  2014.5 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京国際フォーラム   Country:Japan  

  • タンデム超音波乳化法を用いた新規陽極置換反応システムの開発に関する研究

    小川義幸, 舘野拓之, Koji NAKABAYASHI, 柏木恒雄, 跡部真人

    第3回JACI/GSCシンポジウム  2014.5 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京国際フォーラム   Country:Japan  

  • 種々の粒径を有するPANI-PMMAコロイド粒子の合成とコロイド結晶への応用に関する研究

    久野友也, 小泉裕貴, Koji NAKABAYASHI, 跡部真人

    第3回JACI/GSCシンポジウム  2014.5 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京国際フォーラム   Country:Japan  

  • 超臨界二酸化炭素中におけるイオン液体の電気化学的性質の評価とその電解合成的応用

    舘野拓之, 柏木恒雄, Koji NAKABAYASHI, 跡部真人, 仙北久典

    第3回JACI/GSCシンポジウム  2014.5 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京国際フォーラム   Country:Japan  

  • タンデム超音波乳化法を利用する界面活性剤フリーナノエマルション溶液の創製とその応用

    Koji NAKABAYASHI, 小島真耶, 稲木信介, 平井友基, 跡部真人

    第3回JACI/GSCシンポジウム  2014.5 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京国際フォーラム   Country:Japan  

  • 超臨界二酸化炭素雰囲気下におけるイオン液体中での有機化合物の電解カルボキシル化

    舘野拓之, 柏木恒雄, Koji NAKABAYASHI, 跡部真人, 仙北久典

    第38回有機電子移動化学討論会  2014.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長良川国際会議場   Country:Japan  

  • タンデム超音波乳化法を利用した疎水性有機化合物のエマルション電解反応に関する研究

    Koji NAKABAYASHI, 小泉徹, 跡部真人

    第38回有機電子移動化学討論会  2014.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:、長良川国際会議場   Country:Japan  

  • 種々の粒径を有するPANI-PMMAコロイド結晶の作製とエレクトロクロミック特性の評価

    久野友也, 小泉裕貴, Koji NAKABAYASHI, 跡部真人

    2014年電気化学秋季大会  2014.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • PEMリアクターを用いたトルエンの電気化学的水素添加反応(2)

    高野拳, Koji NAKABAYASHI, 柏木恒雄, 跡部真人, 光島重徳

    2014年電気化学秋季大会  2014.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 超臨界二酸化炭素-イオン液体系における有機ハロゲン化物の電解カルボキシル化

    舘野拓之, Koji NAKABAYASHI, 柏木恒雄, 跡部真人, 仙北久典

    2014年電気化学秋季大会  2014.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • タンデム超音波乳化法を用いた新規陽極置換反応

    小川義幸, 舘野拓之, 柏木恒雄, Koji NAKABAYASHI, 跡部真人

    2014年電気化学秋季大会  2014.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 超音波乳化法を利用した材料合成 Invited

    Koji NAKABAYASHI

    2014年電気化学会秋季大会  2014.9 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:北海道大学   Country:Japan  

  • PEMリアクターを用いたトルエン及びその類縁体の電気化学的水素添加反応に関する研究

    高野拳, Koji NAKABAYASHI, 光島重徳, 跡部真人

    第4回CSJ化学フェスタ2014  2014.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:タワーホール船堀   Country:Japan  

  • 導電性高分子複合粒子を用いたコロイド結晶の作製とエレクトロクロミック特性の評価

    久野友也, 小泉裕貴, Koji NAKABAYASHI, 跡部真人

    第4回CSJ化学フェスタ2014  2014.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:タワーホール船堀   Country:Japan  

  • タンデム超音波乳化法を用いた新規陽極置換反応に関する研究

    小川義幸, 舘野拓之, Koji NAKABAYASHI, 跡部真人

    第4回CSJ化学フェスタ2014  2014.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:タワーホール船堀   Country:Japan  

  • ニートモノマー溶液中での電解重合法の開発及び特性評価

    田中栄作, Koji NAKABAYASHI, 跡部真人

    第4回CSJ化学フェスタ2014  2014.10 

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    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:タワーホール船堀   Country:Japan  

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Industrial property rights

Patent   Number of applications: 4   Number of registrations: 0
Utility model   Number of applications: 0   Number of registrations: 0
Design   Number of applications: 0   Number of registrations: 0
Trademark   Number of applications: 0   Number of registrations: 0

Professional Memberships

  • 炭素材料学会、電気化学会、日本化学会、炭素材料学会次世代の会

  • 炭素材料学会、電気化学会、日本化学会、炭素材料学会次世代の会

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Committee Memberships

  • 炭素材料学会次世代の会   Vice-chairman   Domestic

    2019.6 - 2021.6   

  • 炭素材料学会次世代の会   Organizer   Domestic

    2016.12 - 2017.12   

Academic Activities

  • アドバイザー

    第58回炭素材料学会夏季セミナー  ( Japan ) 2021.8 - 2021.6

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    Type:Competition, symposium, etc. 

    Number of participants:100

  • Screening of academic papers

    Role(s): Peer review

    2021

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:7

  • Screening of academic papers

    Role(s): Peer review

    2020

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:12

  • 学会実行委員長

    第57回炭素材料学会夏季セミナー  ( Japan ) 2019.9

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    Type:Competition, symposium, etc. 

    Number of participants:100

  • 運営委員 International contribution

    第58回電池討論会  ( Japan ) 2017.11

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    Type:Competition, symposium, etc. 

    Number of participants:2,500

  • Organizer International contribution

    CSE2016  ( Japan ) 2016.9

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    Type:Competition, symposium, etc. 

    Number of participants:100

  • 座長(Chairmanship) International contribution

    1st Japan-China-Korea Joint Seminar on Green Energy Processes and Materials  ( Kyushu University, Chikushi Campus, Institute for Chemistry and Materials Engineering Japan ) 2015.3

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    Type:Competition, symposium, etc. 

  • Organizer

    第41回炭素材料学会年会  ( Japan ) 2014.12

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    Type:Competition, symposium, etc. 

    Number of participants:1,000

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Other

  • 国立研究開発法人新エネルギー・産業技術総合開発機構が公募していた「カーボンリサイクル・次世代火力発電等技術開発/次世代火力発電技術推進事業/カーボンリサイクル技術の共通基盤技術開発」に応募し、『CO2を活用したマリンバイオマス由来活性炭転換技術の開発』の研究に関して、採択されるに至った。

    2021.12

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    国立研究開発法人新エネルギー・産業技術総合開発機構(NEDO)が公募する「カーボンリサイクル・次世代火力発電等技術開発/次世代火力発電技術推進事業/カーボンリサイクル技術の共通基盤技術開発」の課題において、研究代表者として採択されるに至った。具体的な研究課題名は、『CO2を活用したマリンバイオマス由来活性炭転換技術の開発』となっている。

Research Projects

  • 理想構造を有する炭素構造体の製造

    2022.6 - 2023.6

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 理想構造を有する活性炭の製造

    2022.4 - 2023.6

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 重質残渣の利用法を検討する

    2022.4 - 2023.6

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 二酸化炭素を利用した炭素材料の製造

    2022.4 - 2023.6

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 本提案研究ではCO2排出削減の実現に寄与する技術として、CO2を利用した材料開発を行う。具体的には、マリンバイオマスを原料としCO2と反応させ高級炭素材である活性炭を製造する技術の研究開発を行う。

    2021 - 2023

    Industrial Technology Research Grant Program (Ministry of Economy, Trade and Industry)

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    Authorship:Principal investigator  Grant type:Contract research

  • 燃焼灰に含まれる特定構造炭素に関する研究

    2020.6 - 2022.6

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 低コストと高性能を両立した炭素繊維の研究開発

    2020 - 2024

    Industrial Technology Research Grant Program (Ministry of Economy, Trade and Industry)

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    Authorship:Principal investigator  Grant type:Contract research

  • 重質油を用いた革新的炭素繊維製造技術の確立に関する研究

    Grant number:20K15321  2020 - 2021

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Early-Career Scientists

    中林 康治

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    Authorship:Principal investigator  Grant type:Scientific research funding

    本研究では、二酸化炭素(CO2)を大幅に削減する環境負荷低減技術の提案として、重質油を利用したCO2ゼロエミッション型の炭素構造体変換システムを開発する。一般的に燃料として用いられる重質油から炭素構造体(炭素繊維)に転換する技術を確立できればCO2の大幅削減が達成されることのみならず、構造体として自動車車体や建材、航空宇宙機材への高度利用は勿論のこと、構造体として炭素を貯蔵(備蓄)することにも繋がり、革新的な低炭素化社会のプロセスを構築することができる。

    CiNii Research

  • Sustainable Processes in Civil and Chemical Engineering International coauthorship

    2019.11 - 2021.11

    Department of Civil Engineering, BITS Pilani-Hyderabad 

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    土木建築に司る、プロセス、材料設計の指針を与える共同研究

  • 二酸化炭素を利用する革新的カーボンナノファイバー合成技術の確立

    Grant number:18K14264  2018 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Early-Career Scientists

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • ドライスッジ析出対策検討及び設計手法の確立

    2017.6 - 2020.6

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • SPH生成重質残渣を用いた凝集緩和効果の確認

    2016.9 - 2020.6

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

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Class subject

  • エネルギー物質工学実験I

    2021.4 - 2021.9   First semester

  • 素子材料工学

    2024.10 - 2025.3   Second semester

  • エネルギー材料科学

    2024.10 - 2025.3   Second semester

FD Participation

  • 2023.2   Role:Speech   Title:座礁資源で炭素循環社会を創る

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2020.1   Role:Participation   Title:FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2015.5   Role:Speech   Title:平成27年度先導物質化学研究所第1回FD講演会.

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2015.1   Role:Moderator   Title:平成26年度第2回FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

Participation in international educational events, etc.

  • 2015.3

    Reserch and education center of carbon resources, kyushu university

    1st Japan-China-Korea Joint Seminar on Green Energy Processes and Materials (4th KU-KIER Joint Symposium on Green Energy Processes and Materials)

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    Venue:Kyushu University, Chikushi Campus, Institute for Chemistry and Materials Engineering, Central part, Room 111 Kasuga, Fukuoka, 816-8580, Japan

    Number of participants:40

Outline of Social Contribution and International Cooperation activities

  • インドのDepartment of Civil Engineering, BITS Pilani-Hyderabadとの国際共同研究を行っている。内容としては、土木建築に司る、プロセス及び材料設計の指針を互いに構築するものである。

Social Activities

  • 未利用炭素資源で炭素循環社会を創る〜座礁資源の高度利用〜

    九州大学・九州大学学術研究都市推進機構  東京(目黒雅叙園)  2023.12

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

    本セミナーでは、イノベーション・エコシステムの構築につながる九州大学の様々な研究シーズや九州大学を核として産学官連携が進む九州大学学術研究都市の魅力について紹介しています。
     九州大学学術研究都市の「いま」と九州大学の「総合知」を広くご紹介し、「みらい」におけるビジネスチャンスへつながる場を提供するセミナーです。

Acceptance of Foreign Researchers, etc.

  • 湖南大学

    Acceptance period: 2024.2   (Period):Less than 2 weeks

    Nationality:China

  • コペルニクス大学

    Acceptance period: 2021.1 - 2021.4   (Period):1 month or more

    Nationality:Poland

    Business entity:Foreign governments, foreign research institutes, international organizations

  • Anatolu University, Turkey, 外国政府・外国研究機関・国際機関.

    Acceptance period: 2015.11 - 2016.11  

    Nationality:Turkey

Travel Abroad

  • 2023.5

    Staying countory name 1:Korea, Republic of   Staying institution name 1:KRICT

  • 2023.4 - 2022.4

    Staying countory name 1:China   Staying institution name 1:清華大学

  • 2022.5 - 2023.6

    Staying countory name 1:United Kingdom   Staying institution name 1:Imperial College London

  • 2019.11

    Staying countory name 1:India   Staying institution name 1:BITS Pilani-Hyderabad Campus

  • 2016.6

    Staying countory name 1:China   Staying institution name 1:East China University of Science and Technology

  • 2016.5

    Staying countory name 1:Kuwait   Staying institution name 1:Kuwait Institute for Scientific Research

  • 2016.2

    Staying countory name 1:Kuwait   Staying institution name 1:Kuwait Institute for Scientific Research

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