World's Best Scientists 2026 revealed!
Ryoji Takahashi

Ryoji Takahashi

D-Index & Metrics

Chemistry

D-Index
47
Citations
7306
World Ranking
15712
National Ranking
1237

Ryoji Takahashi 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 Ryoji Takahashi 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: 163 publications — 18th percentile

18% of scientists in this discipline score the same or lower.

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

Ryoji Takahashi 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 Ryoji Takahashi 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: 47 D-Index — 14th percentile

14% of scientists in this discipline score the same or lower.

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

Overview

Ryoji Takahashi is affiliated with Ehime University in Japan and works primarily in the fields of Engineering and Materials Science. Their research spans several interdisciplinary areas including Biomedical Engineering, Mechanical Engineering, Materials Chemistry, Inorganic Chemistry, and Catalysis.

The scientist's work focuses significantly on catalysis and biomass conversion, engaging topics such as Catalysis for Biomass Conversion, Zeolite Catalysis and Synthesis, Mesoporous Materials and Catalysis, Catalysts for Methane Reforming, Catalysis and Hydrodesulfurization Studies, Microbial Metabolic Engineering and Bioproduction, and Biofuel Production and Bioconversion.

Recent publications highlight a concentration on catalytic processes and material development:

  • Dehydration of Biomass-Derived Butanediols over Rare Earth Zirconate Catalysts, 2020, Catalysts
  • Dehydration of 2,3-butanediol to produce 1,3-butadiene over Sc2O3 catalyst prepared through hydrothermal aging, 2021, Molecular Catalysis
  • Vapor-phase intramolecular aldol condensation of 2,5-hexanedione over yttrium zirconate catalyst, 2024, Applied Catalysis A General
  • Preparation of meso-macro bimodal porous amorphous silica-alumina as an acidic catalyst, 2022, Journal of Sol-Gel Science and Technology
  • Passive Control of 2 Link Rotary Manipulator by MR Fluid, 2023, The Proceedings of Conference of Kyushu Branch

Frequent co-authors in Takahashi's work include Yasuhiro Yamada, Satoshi Sato, Kazuki Nakazono, Fumiya Sato, and Takuto Adachi, with multiple collaborations indicating ongoing research partnerships.

The primary venues for Takahashi's publications reflect a focus on catalysis and material science journals and conference proceedings, including Molecular Catalysis, Applied Catalysis A General, Catalysts, Journal of Sol-Gel Science and Technology, and The Proceedings of Conference of Kyushu Branch.

Best Publications

  • Production of acrolein from glycerol over silica-supported heteropoly acids

    Eriko Tsukuda;Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa

  • BASIC PROPERTIES OF RARE EARTH OXIDES

    Satoshi Sato;Ryoji Takahashi;Ryoji Takahashi;Mika Kobune;Hiroshi Gotoh

  • Dehydration–hydrogenation of glycerol into 1,2-propanediol at ambient hydrogen pressure

    Masaki Akiyama;Satoshi Sato;Ryoji Takahashi;Kanichiro Inui

  • High Surface-Area Silica with Controlled Pore Size Prepared from Nanocomposite of Silica and Citric Acid

    Ryoji Takahashi;Satoshi Sato;Toshiaki Sodesawa;Machiko Kawakita

  • Vapor-phase reaction of polyols over copper catalysts

    Satoshi Sato;Masaki Akiyama;Ryoji Takahashi;Ryoji Takahashi;Takayoshi Hara

  • Ketonization of carboxylic acids over CeO2-based composite oxides

    Osamu Nagashima;Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa

  • Formation of Hierarchical Pore Structure in Silica Gel

    Kazuki Nakanishi;Ryoji Takahashi;Tomohiro Nagakane;Koji Kitayama

  • Preparation of Ni/SiO2 catalyst with high thermal stability for CO2-reforming of CH4

    Satoshi Tomiyama;Ryoji Takahashi;Satoshi Sato;Toshiaki Sodesawa

  • Phase Separation in Silica Sol–Gel System Containing Poly(ethylene oxide). I. Phase Relation and Gel Morphology

    Kazuki Nakanishi;Hiroshi Komura;Ryoji Takahashi;Naohiro Soga

  • Giant negative thermal expansion in the iron perovskite SrCu3Fe4O12.

    Ikuya Yamada;Kazuki Tsuchida;Kenya Ohgushi;Naoaki Hayashi

  • Catalytic reaction of 1,3-butanediol over solid acids

    Naoki Ichikawa;Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa

  • Distinction between Surface and Bulk Oxidation of Cu through N2O Decomposition

    Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa;Ken-ichi Yuma

  • Synthesis of 3-pentanone from 1-propanol over CeO2–Fe2O3 catalysts

    Yoichiro Kamimura;Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa

  • Dehydrogenative cyclization of 1,4-butanediol over copper-based catalyst

    Naoki Ichikawa;Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa

  • Dehydration of diols catalyzed by CeO2

    Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa;Nozomi Honda

  • Selective dehydration of diols to allylic alcohols catalyzed by ceria

    Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa;Nozomi Honda

  • Dehydration of 1,4-butanediol over rare earth oxides

    Satoshi Sato;Ryoji Takahashi;Ryoji Takahashi;Mika Kobune;Hirotomo Inoue

  • PIO study on 1,3-butanediol dehydration over CeO2 (1 1 1) surface

    Naoki Ichikawa;Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa

  • Dehydration of butanediols over CeO2 catalysts with different particle sizes

    Ai Igarashi;Naoki Ichikawa;Satoshi Sato;Ryoji Takahashi

  • Ligand Binding Mechanism in Steroid Receptors: From Conserved Plasticity to Differential Evolutionary Constraints

    Karl Edman;Ali Hosseini;Magnus K. Bjursell;Anna Aagaard

  • Ortho-Selective Alkylation of Phenol with 1-Propanol Catalyzed by CeO2–MgO

    Satoshi Sato;Ryoji Takahashi;Toshiaki Sodesawa;Kotaro Matsumoto

Frequent Co-Authors

Satoshi Sato
Satoshi Sato Chiba University
Kazuki Nakanishi
Kazuki Nakanishi Nagoya University
Tetsuo Irifune
Tetsuo Irifune Ehime University
Toru Inoue
Toru Inoue Hiroshima University
Katsuyuki Ogura
Katsuyuki Ogura Chiba University
Naohiro Soga
Naohiro Soga Kyoto University
Mikio Takano
Mikio Takano Kyoto University
Tadashi Kokubo
Tadashi Kokubo Chubu University
Hyun-Min Kim
Hyun-Min Kim Yonsei University
Hideki Abe
Hideki Abe National Institute for Materials Science

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