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Jun-ichiro Hayashi

Jun-ichiro Hayashi

Kyushu University
Japan

D-Index & Metrics

Chemistry

D-Index
66
Citations
16777
World Ranking
7225
National Ranking
471

Jun-ichiro Hayashi publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Jun-ichiro Hayashi sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 332 publications — 70th percentile

70% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Jun-ichiro Hayashi D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Jun-ichiro Hayashi sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 66 D-Index — 60th percentile

60% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Jun-ichiro Hayashi is affiliated with Kyushu University in Japan, specializing primarily in the field of Engineering. Their research contributions span various subfields, including Biomedical Engineering, Mechanical Engineering, Catalysis, Materials Chemistry, and Biomaterials.

The main topics addressed in their work include:

  • Thermochemical Biomass Conversion Processes
  • Catalysis for Biomass Conversion
  • Lignin and Wood Chemistry
  • Biofuel production and bioconversion
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Subcritical and Supercritical Water Processes
  • Catalysts for Methane Reforming

Hayashi has published extensively, with notable recent papers including:

  • Impact of heating rates on the evolution of function groups of the biochar from lignin pyrolysis (2021), published in Journal of Analytical and Applied Pyrolysis
  • Microwave-assisted dry reforming of methane for syngas production: a review (2020), published in Environmental Chemistry Letters
  • Review on the catalytic tri-reforming of methane - Part II: Catalyst development (2021), published in Applied Catalysis A General
  • Catalytic Strategies for Levoglucosenone Production by Pyrolysis of Cellulose and Lignocellulosic Biomass (2021), published in Energy & Fuels
  • Switching to tenofovir alafenamide for nucleos(t)ide analogue-experienced patients with chronic hepatitis B: week 144 results from a real-world, multi-centre cohort study (2022), published in Alimentary Pharmacology & Therapeutics

The most frequent publication venues for Hayashi's work include:

  • Energy & Fuels
  • ISIJ International
  • Fuel
  • SSRN Electronic Journal
  • ACS Sustainable Chemistry & Engineering

Collaborations form a significant aspect of their career. Frequent co-authors include:

  • Shinji Kudo
  • Shusaku Asano
  • U.P.M. Ashik
  • Xin Huang
  • Atsushi Tahara

Hayashi's research intersects predominantly with catalytic and thermochemical processes for biomass conversion, contributing to advancements in sustainable energy and environmental chemistry. Their work engages both fundamental and applied aspects of catalysis, with a notable focus on methane reforming and lignocellulosic biomass pyrolysis.

Best Publications

  • Production of Levoglucosenone and Dihydrolevoglucosenone by Catalytic Reforming of Volatiles from Cellulose Pyrolysis Using Supported Ionic Liquid Phase

    Shinji Kudo;Nozomi Goto;Jonathan Sperry;Koyo Norinaga

  • FT-Raman spectroscopic study of the evolution of char structure during the pyrolysis of a Victorian brown coal

    Xiaojiang Li;Jun ichiro Hayashi;Chun Zhu Li

  • Volatilisation and catalytic effects of alkali and alkaline earth metallic species during the pyrolysis and gasification of Victorian brown coal. Part IV. Catalytic effects of NaCl and ion-exchangeable Na in coal on char reactivity☆

    Dimple Mody Quyn;Hongwei Wu;Jun Ichiro Hayashi;Chun Zhu Li

  • Volatilisation and catalytic effects of alkali and alkaline earth metallic species during the pyrolysis and gasification of Victorian brown coal. Part VII. Raman spectroscopic study on the changes in char structure during the catalytic gasification in air

    Xiaojiang Li;Jun ichiro Hayashi;Chun Zhu Li

  • Effect of Alkali and Alkaline Earth Metallic Species on Biochar Reactivity and Syngas Compositions during Steam Gasification

    Kongvui Yip;Fujun Tian;Jun Ichiro Hayashi;Hongwei Wu

  • Primary Release of Alkali and Alkaline Earth Metallic Species during the Pyrolysis of Pulverized Biomass

    Tsutomu Okuno;Nozomu Sonoyama;Jun Ichiro Hayashi;Chun Zhu Li

  • Volatilisation of alkali and alkaline earth metallic species during the pyrolysis of biomass: Differences between sugar cane bagasse and cane trash

    Daniel Mark Keown;George Favas;Jun-Ichiro Hayashi;Chun-Zhu Li

  • Pyrolysis of a Victorian brown coal and gasification of nascent char in CO2 atmosphere in a wire-mesh reactor

    Kawser Jamil;Jun Ichiro Hayashi;Jun Ichiro Hayashi;Chun Zhu Li

  • Pore size control of carbonized BPDA-pp′ ODA polyimide membrane by chemical vapor deposition of carbon

    Jun Ichiro Hayashi;Hirotaka Mizuta;Masatake Yamamoto;Katsuki Kusakabe

  • Separation of ethane/ethylene and propane/propylene systems with a carbonized BPDA-pp'ODA polyimide membrane

    Jun-ichiro Hayashi;Hirotaka Mizuta;Masatake Yamamoto;Katsuki Kusakabe

  • Mechanism of decomposition of aromatics over charcoal and necessary condition for maintaining its activity

    Sou Hosokai;Kazuhiro Kumabe;Mikio Ohshita;Koyo Norinaga

  • Catalytic and Noncatalytic Mechanisms in Steam Gasification of Char from the Pyrolysis of Biomass

    Makiko Kajita;Tokuji Kimura;Koyo Norinaga;Chun Zhu Li

  • Volatilisation and catalytic effects of alkali and alkaline earth metallic species during the pyrolysis and gasification of Victorian brown coal. Part V. Combined effects of Na concentration and char structure on char reactivity

    Hongwei Wu;Jun Ichiro Hayashi;Tadatoshi Chiba;Takayuki Takarada

  • Drastic changes in biomass char structure and reactivity upon contact with steam

    Daniel Mark Keown;Jun-Ichiro Hayashi;Chun-Zhu Li

  • Conversion of Fuel-N into HCN and NH3 During the Pyrolysis and Gasification in Steam: A Comparative Study of Coal and Biomass†

    Fujun Tian;Jiang Long Yu;Lachlan James McKenzie;Jun-Ichiro Hayashi

  • Characterization of the structural features of char from the pyrolysis of cane trash using Fourier transform-Raman spectroscopy

    Daniel Mark Keown;Xiaojiang Li;Jun-Ichiro Hayashi;Chun-Zhu Li

  • Effects of volatile–char interactions on the volatilisation of alkali and alkaline earth metallic species during the pyrolysis of biomass

    Daniel Mark Keown;Jun-Ichiro Hayashi;Chun-Zhu Li

  • Inhibition of steam gasification of char by volatiles in a fluidized bed under continuous feeding of a brown coal

    Bazardorj Bayarsaikhan;Nozomu Sonoyama;Sou Hosokai;Taihei Shimada

  • Roles of inherent metallic species in secondary reactions of tar and char during rapid pyrolysis of brown coals in a drop-tube reactor ☆

    Jun Ichiro Hayashi;Masahiro Iwatsuki;Kayoko Morishita;Atsushi Tsutsumi

  • Evolution of biomass char structure during oxidation in O2 as revealed with FT-Raman spectroscopy

    Daniel Mark Keown;Xiaojiang Li;Jun-Ichiro Hayashi;Chun-Zhu Li

  • Volatilisation and catalytic effects of alkali and alkaline earth metallic species during the pyrolysis and gasification of Victorian brown coal. Part VI. Further investigation into the effects of volatile-char interactions

    Xiaojiang Li;Hongwei Wu;Jun Ichiro Hayashi;Chun Zhu Li

Frequent Co-Authors

Chun-Zhu Li
Chun-Zhu Li Curtin University
Katsuki Kusakabe
Katsuki Kusakabe Kyushu University
Shigeharu Morooka
Shigeharu Morooka Kyushu University
Hongwei Wu
Hongwei Wu Curtin University
Ondřej Mašek
Ondřej Mašek University of Edinburgh
Masaharu Tsuji
Masaharu Tsuji Kyushu University
Atsushi Tsutsumi
Atsushi Tsutsumi University of Tokyo
Jianglong Yu
Jianglong Yu Monash University
Takao Masuda
Takao Masuda Hokkaido University
Wan Mohd Ashri Wan Daud
Wan Mohd Ashri Wan Daud University of Malaya

External Links

Personal website of Jun-ichiro Hayashi

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Best Scientists Citing Jun-ichiro Hayashi

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Curtin University

Publications: 92

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China University of Mining and Technology

Publications: 69

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Publications: 66

Yi Wang

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Huazhong University of Science and Technology

Publications: 48

Jun Xiang

Jun Xiang

Huazhong University of Science and Technology

Publications: 46

Song Hu

Song Hu

Huazhong University of Science and Technology

Publications: 44

Xun Hu

Xun Hu

University of Jinan

Publications: 41

Guangwen Xu

Guangwen Xu

Chinese Academy of Sciences

Publications: 39

Sheng Su

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Changsha University of Science and Technology

Publications: 39

Guoqing Guan

Guoqing Guan

Hirosaki University

Publications: 34

Haiping Yang

Haiping Yang

Huazhong University of Science and Technology

Publications: 33

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Huazhong University of Science and Technology

Publications: 32

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Shaozeng Sun

Harbin Institute of Technology

Publications: 28

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Monash University

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