World's Best Scientists 2026 revealed!
Ryo Ohmura

Ryo Ohmura

D-Index & Metrics

Chemistry

D-Index
56
Citations
9828
World Ranking
11780
National Ranking
875

Ryo Ohmura 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 Ryo Ohmura 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: 268 publications — 55th percentile

55% of scientists in this discipline score the same or lower.

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

Ryo Ohmura 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 Ryo Ohmura 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: 56 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

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

Overview

Ryo Ohmura is affiliated with Keio University in Japan and has a research focus that spans environmental science and engineering. Their scholarly contributions primarily address topics related to methane hydrates, spacecraft and cryogenic technologies, and CO2 sequestration with geologic interactions, among other specialized fields.

The scientist's key research topics include:

  • Methane Hydrates and Related Phenomena
  • Spacecraft and Cryogenic Technologies
  • CO2 Sequestration and Geologic Interactions
  • Phase Change Materials Research
  • Adsorption and Cooling Systems
  • Carbon Dioxide Capture Technologies
  • Inorganic Fluorides and Related Compounds

Their work is situated mainly within the subfields of environmental chemistry, aerospace engineering, mechanical engineering, environmental engineering, and inorganic chemistry.

Ryo Ohmura has contributed extensively to the following publication venues:

  • The Journal of Chemical Thermodynamics
  • International Journal of Thermophysics
  • Journal of Energy Storage
  • Journal of Industrial and Engineering Chemistry
  • Fluid Phase Equilibria

Recent publications demonstrate a focus on hydrate-based gas separations, desalination, and interfacial molecular dynamics. Selected papers include:

  • "Improvement of continuous hydrate-based CO2 separation by forming structure II hydrate in the system of H2 + CO2 + H2O + Tetrahydropyran (THP)", 2020, Fuel
  • "Molecular dynamics simulations of interfacial properties of the CO2-water and CO2-CH4-water systems", 2020, The Journal of Chemical Physics
  • "Simultaneous Crystallization of Cyclopentane Hydrate and Sodium Chloride for Desalination and Salt Manufacture", 2021, ACS Sustainable Chemistry & Engineering
  • "Development of dual functional methodology for seawater desalination and salt manufacture by carbon dioxide hydrate formation", 2022, Desalination
  • "Continuous hydrate-based CO2 separation from H2 + CO2 gas mixture using cyclopentane as co-guest", 2023, Journal of Industrial and Engineering Chemistry

Frequent collaborators have included Saman Alavi, Satoshi Takeya, Keita Yasuda, Leo Kamiya, and Atsushi Hotta, reflecting ongoing research partnerships.

Best Publications

  • Water proton configurations in structures I, II, and H clathrate hydrate unit cells.

    Fumihito Takeuchi;Masaki Hiratsuka;Ryo Ohmura;Saman Alavi

  • Decomposition of methane hydrates in sand, sandstone, clays, and glass beads

    Tsutomu Uchida;Satoshi Takeya;Evgene M. Chuvilin;Ryo Ohmura

  • Development of a novel hydrate-based refrigeration system: A preliminary overview

    Tomohiro Ogawa;Tomonari Ito;Kenji Watanabe;Ken ichi Tahara

  • Statistical study of clathrate-hydrate nucleation in a water/hydrochlorofluorocarbon system: Search for the nature of the memory effect

    Ryo Ohmura;Mikio Ogawa;Kenji Yasuoka;Yasuhiko H. Mori

  • Kinetics and stability of CH4-CO2 mixed gas hydrates during formation and long-term storage.

    Tsutomu Uchida;Ikuko Y. Ikeda;Satoshi Takeya;Yasushi Kamata

  • Phase Equilibrium for Clathrate Hydrates Formed with Methane, Ethane, Propane, or Carbon Dioxide at Temperatures below the Freezing Point of Water

    Keita Yasuda;Ryo Ohmura

  • Structure-I and Structure-H Hydrate Formation Using Water Spraying

    Ryo Ohmura;Shigetoyo Kashiwazaki;Saburo Shiota;Hideyuki Tsuji

  • Clathrate Hydrate Formed with Methane and 2-Propanol: Confirmation of Structure II Hydrate Formation

    Ryo Ohmura;Satoshi Takeya;and Tsutomu Uchida;Takao Ebinuma

  • Particle size effect of CH4 hydrate for self-preservation

    Satoshi Takeya;Tsutomu Uchida;Jiro Nagao;Ryo Ohmura

  • Hydrogen-bonding alcohol-water interactions in binary ethanol, 1-propanol, and 2-propanol+methane structure II clathrate hydrates.

    Saman Alavi;Satoshi Takeya;Ryo Ohmura;Tom K. Woo

  • Clathrate hydrate crystal growth in liquid water saturated with a guest substance: Observations in a methane + water system

    Ryo Ohmura;Sadatoshi Matsuda;Tsutomu Uchida;Takao Ebinuma

  • Crystal Growth of Clathrate Hydrates Formed at the Interface of Liquid Water and Gaseous Methane, Ethane, or Propane: Variations in Crystal Morphology

    Ryo Tanaka;Riki Sakemoto;Ryo Ohmura

  • Phase equilibrium of ionic semiclathrate hydrates formed with tetrabutylammonium bromide and tetrabutylammonium chloride

    Kai Sato;Hiroki Tokutomi;Ryo Ohmura

  • Clathrate Hydrate Formation from Cyclopentane-in-Water Emulsions

    Masahiro Nakajima;Ryo Ohmura;Yasuhiko H. Mori

  • Two-Step Formation of Methane-Propane Mixed Gas Hydrates in A Batch-Type Reactor

    Tsutomu Uchida;Minoru Moriwaki;Satoshi Takeya;Ikuko Y. Ikeda

  • Clathrate-hydrate crystal growth in liquid water saturated with a hydrate-forming substance : Variations in crystal morphology

    Ryo Ohmura;Wataru Shimada;Tsutomu Uchida;Yasuhiko H. Mori

  • Formation, growth and dissociation of clathrate hydrate crystals in liquid water in contact with a hydrophobic hydrate-forming liquid

    Ryo Ohmura;Toru Shigetomi;Yasuhiko H Mori

  • Clathrate hydrate crystal growth at the seawater/hydrophobic-guest-liquid interface

    Riki Sakemoto;Hiroki Sakamoto;Kuniaki Shiraiwa;Ryo Ohmura

  • Experiments and thermodynamic simulations for continuous separation of CO2 from CH4 + CO2 gas mixture utilizing hydrate formation

    Shuhei Tomita;Satoru Akatsu;Ryo Ohmura

  • Hydrate formation using water spraying in a hydrophobic gas: A preliminary study

    Kazuya Fukumoto;Jun Ichiro Tobe;Ryo Ohmura;Yasuhiko H. Mori

  • Crystal Growth of Clathrate Hydrate at the Interface between Hydrocarbon Gas Mixture and Liquid Water

    Kota Saito;Masatoshi Kishimoto;Ryo Tanaka;Ryo Ohmura

Frequent Co-Authors

Satoshi Takeya
Satoshi Takeya National Institute of Advanced Industrial Science and Technology
Saman Alavi
Saman Alavi University of Ottawa
Takao Ebinuma
Takao Ebinuma National Institute of Advanced Industrial Science and Technology
Kenji Yasuoka
Kenji Yasuoka Keio University
Jiro Nagao
Jiro Nagao National Institute of Advanced Industrial Science and Technology
Amadeu K. Sum
Amadeu K. Sum Colorado School of Mines
John A. Ripmeester
John A. Ripmeester National Research Council Canada
Igor L. Moudrakovski
Igor L. Moudrakovski Max Planck Society
Tom K. Woo
Tom K. Woo University of Ottawa
Bruce A. Buffett
Bruce A. Buffett University of California, Berkeley

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