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Ryuji Kikuchi

Ryuji Kikuchi

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 62 8880 8057 617 574 232 12910

Ryuji Kikuchi publications per year

The chart shows the history of publications by Ryuji Kikuchi between 1996 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ryuji Kikuchi published across 30 years, from 1996 to 2025, averaging 8.3 papers a year. Output peaked at 17 publications in 2008. 10 of the 250 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1996 to 2025. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2008. 1996: 2 publications 1997: 3 publications 1998: 0 publications 1999: 1 publication 2000: 2 publications 2001: 7 publications 2002: 10 publications 2003: 15 publications 2004: 5 publications 2005: 11 publications 2006: 15 publications 2007: 13 publications 2008: 17 publications 2009: 13 publications 2010: 15 publications 2011: 7 publications 2012: 2 publications 2013: 7 publications 2014: 13 publications 2015: 10 publications 2016: 9 publications 2017: 14 publications 2018: 7 publications 2019: 13 publications 2020: 14 publications 2021: 11 publications 2022: 4 publications 2023: 0 publications 2024: 5 publications 2025: 5 publications
1996 2025

250 publications in total across all disciplines

View publications per year as a table
Ryuji Kikuchi: publications per year, 1996 to 2025
Year Publications
1996 2
1997 3
1998 0
1999 1
2000 2
2001 7
2002 10
2003 15
2004 5
2005 11
2006 15
2007 13
2008 17
2009 13
2010 15
2011 7
2012 2
2013 7
2014 13
2015 10
2016 9
2017 14
2018 7
2019 13
2020 14
2021 11
2022 4
2023 0
2024 5
2025 5
Total 250
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Ryuji Kikuchi publications per year - data summary

  • Ryuji Kikuchi, a Chemistry scholar from University of Tokyo, has 250 publications recorded across 30 years, from 1996 to 2025.
  • The oldest publication on record dates to 1996 and the most recent to 2025.
  • The most productive year is 2008, with 17 publications.
  • The least productive year with any output is 1999, with 1 publication.
  • 2 of the 30 years in the span carry no publications at all (1998 and 2023).
  • The rate of publication averages 8.3 papers per year over the whole span, or 8.9 per year counting only the 28 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 25 publications, 10% of the career total.
  • Split into equal eras - 1996-2005: 56 publications (5.6 per year); 2006-2015: 112 publications (11.2 per year); 2016-2025: 82 publications (8.2 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Ryuji Kikuchi 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 Ryuji Kikuchi sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 221–240 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 232 publications — 44th percentile

44% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216 232
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Ryuji Kikuchi publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • Ryuji Kikuchi, a Chemistry scholar from University of Tokyo, records 232 publications - the 44th percentile of the discipline.
  • 44% of ranked Chemistry scientists score the same or lower than Ryuji Kikuchi, and about 56% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Ryuji Kikuchi ranks below the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

Ryuji Kikuchi 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 Ryuji Kikuchi sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 62–63 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 62 D-Index — 52nd percentile

52% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834 62
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Ryuji Kikuchi D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • Ryuji Kikuchi, a Chemistry scholar from University of Tokyo, records 62 D-Index - the 52nd percentile of the discipline.
  • 52% of ranked Chemistry scientists score the same or lower than Ryuji Kikuchi, and about 48% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Ryuji Kikuchi falls inside that same range.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Overview

Ryuji Kikuchi is affiliated with the University of Tokyo in Japan and has a research focus primarily in materials science and chemical engineering. Their work encompasses various subfields, including materials chemistry, catalysis, and renewable energy, sustainability, and the environment.

The scientist's research topics mainly cover catalytic processes in materials science, catalysts for methane reforming, and carbon dioxide utilization in catalysis. Other areas include catalysis and oxidation reactions, advancements in solid oxide fuel cells, catalysis and hydrodesulfurization studies, and ammonia synthesis and nitrogen reduction.

Ryuji Kikuchi has contributed to numerous publications in several established scientific venues. Frequent publication venues include:

  • Energy & Fuels
  • Journal of the Japan Petroleum Institute
  • Catalysis Science & Technology
  • Journal of Catalysis
  • International Journal of Hydrogen Energy

Some of their recent papers are:

  • What Are the Best Active Sites for CO2 Methanation over Ni/CeO2?, 2021, Energy & Fuels
  • Ru nanoparticles supported on amorphous ZrO2for CO2methanation, 2020, Catalysis Science & Technology
  • Development of CO2-to-Methanol Hydrogenation Catalyst by Focusing on the Coordination Structure of the Cu Species in Spinel-Type Oxide Mg1-xCuxAl2O4, 2020, ACS Catalysis
  • How to scrutinize adsorbed intermediates observed by in situ spectroscopy: Analysis of Coverage Transients (ACT), 2020, Journal of Catalysis
  • Low-temperature chemical synthesis of intermetallic TiFe nanoparticles for hydrogen absorption, 2021, International Journal of Hydrogen Energy

Ryuji Kikuchi collaborates frequently with several coauthors, among the most frequent are Shohei Tada, Naoya Fujiwara, Yasukazu Kobayashi, Masahiko Nishijima, and Tetsuo Honma.

Best Publications

  • Limiting mechanisms in catalytic steam reforming of dimethyl ether

    Kajornsak Faungnawakij;Naohiro Shimoda;Nawin Viriya-empikul;Ryuji Kikuchi

  • Ni/CeO2 catalysts with high CO2 methanation activity and high CH4 selectivity at low temperatures

    Shohei Tada;Teruyuki Shimizu;Hiromichi Kameyama;Takahide Haneda

  • Catalytic autothermal reforming of methane and propane over supported metal catalysts

    S. Ayabe;H. Omoto;T. Utaka;R. Kikuchi

  • Study on steam reforming of CH4 and C2 hydrocarbons and carbon deposition on Ni-YSZ cermets

    Tatsuya Takeguchi;Yukimune Kani;Tatsuya Yano;Ryuji Kikuchi

  • Impedance Analysis of Internal Resistance Affecting the Photoelectrochemical Performance of Dye-Sensitized Solar Cells

    T. Hoshikawa;M. Yamada;R. Kikuchi;K. Eguchi

  • Fuel flexibility in power generation by solid oxide fuel cells

    K Eguchi;H Kojo;T Takeguchi;R Kikuchi

  • Water gas shift reaction for the reformed fuels over Cu/MnO catalysts prepared via spinel-type oxide

    Yohei Tanaka;Toshimasa Utaka;Ryuji Kikuchi;Tatsuya Takeguchi

  • Steam reforming of dimethyl ether over composite catalysts of γ-Al2O3 and Cu-based spinel

    Yohei Tanaka;Ryuji Kikuchi;Tatsuya Takeguchi;Koichi Eguchi

  • Hydrogen production from dimethyl ether steam reforming over composite catalysts of copper ferrite spinel and alumina

    Kajornsak Faungnawakij;Yohei Tanaka;Naohiro Shimoda;Tetsuya Fukunaga

  • Promotion of CO2 methanation activity and CH4 selectivity at low temperatures over Ru/CeO2/Al2O3 catalysts

    Shohei Tada;Shohei Tada;Ochieng James Ochieng;Ryuji Kikuchi;Takahide Haneda

  • Thermodynamic evaluation of methanol steam reforming for hydrogen production

    Kajornsak Faungnawakij;Ryuji Kikuchi;Koichi Eguchi

  • Determination of dispersion of precious metals on CeO2-containing supports

    Tatsuya Takeguchi;Shunsuke Manabe;Ryuji Kikuchi;Koichi Eguchi

  • Effect of precious metal addition to Ni-YSZ cermet on reforming of CH4 and electrochemical activity as SOFC anode

    Tatsuya Takeguchi;Ryuji Kikuchi;Tatsuya Yano;Koichi Eguchi

  • Low-temperature methane oxidation over oxide-supported Pd catalysts: Inhibitory effect of water vapor

    Ryuji Kikuchi;Shingo Maeda;Kazunari Sasaki;Stefan Wennerström

  • Upgrading of pyrolysis bio-oil using nickel phosphide catalysts

    Natsume Koike;Sou Hosokai;Atsushi Takagaki;Shun Nishimura

  • Water gas shift reaction over Cu-based mixed oxides for CO removal from the reformed fuels

    Yohei Tanaka;Toshimasa Utaka;Ryuji Kikuchi;Kazunari Sasaki

  • Kinetic studies of hydrodeoxygenation of 2-methyltetrahydrofuran on a Ni2P/SiO2 catalyst at medium pressure

    Ayako Iino;Ara Cho;Atsushi Takagaki;Ryuji Kikuchi

  • Effects of electrolyte in dye-sensitized solar cells and evaluation by impedance spectroscopy

    T. Hoshikawa;T. Ikebe;R. Kikuchi;K. Eguchi

  • Cu-based spinel catalysts CuB2O4 (B = Fe, Mn, Cr, Ga, Al, Fe0.75Mn0.25) for steam reforming of dimethyl ether

    Kajornsak Faungnawakij;Naohiro Shimoda;Tetsuya Fukunaga;Ryuji Kikuchi

  • Influence of solid–acid catalysts on steam reforming and hydrolysis of dimethyl ether for hydrogen production

    Kajornsak Faungnawakij;Yohei Tanaka;Naohiro Shimoda;Tetsuya Fukunaga

Frequent Co-Authors

Koichi Eguchi
Koichi Eguchi Kyoto University
S. Ted Oyama
S. Ted Oyama National Institute of Advanced Industrial Science and Technology
Atsushi Takagaki
Atsushi Takagaki Kyushu University
Toshiaki Matsui
Toshiaki Matsui Kyoto University
Kajornsak Faungnawakij
Kajornsak Faungnawakij National Science and Technology Development Agency
Kazunari Sasaki
Kazunari Sasaki Kyushu University
Atsushi Tsutsumi
Atsushi Tsutsumi University of Tokyo
Shin-ichi Nakao
Shin-ichi Nakao Kogakuin University
Shigenobu Hayashi
Shigenobu Hayashi National Institute of Advanced Industrial Science and Technology
Wataru Ueda
Wataru Ueda Kanagawa University

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