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Experimental study of melting and dissociation behavior of methane and ammonia under high pressure and high temperature

Research Project

Project/Area Number 19K14815
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 17040:Solid earth sciences-related
Research InstitutionJapan Synchrotron Radiation Research Institute (2021-2022)
National Institute for Materials Science (2019-2020)

Principal Investigator

Kadobayashi Hirokazu  公益財団法人高輝度光科学研究センター, 回折・散乱推進室, テニュアトラック研究員 (10836414)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords天王星・海王星 / 高温高圧力実験 / メタン / ダイヤモンド / 高温高圧実験 / ダイヤモンドアンビルセル / 天王星 / 海王星 / 分子解離 / 放射光X線回折 / ラマン分光 / 氷惑星
Outline of Research at the Start

天王星や海王星の特異な内部磁場の発現原因を、氷惑星マントル物質を用いた高温高圧実験により検討する。これまでの氷惑星のマントルを対象とした高温高圧実験は、水・メタン・アンモニアなど、それぞれ単成分を用いた実験が主であり、現実的な氷惑星マントルの内部条件を再現した多成分系での実験は、ほとんど行われていない。そこで本研究では、氷惑星のマントル組成比を考慮した混合物の高温高圧挙動を調べ、得られた実験結果から氷惑星の内部構造モデルの構築を行う。

Outline of Final Research Achievements

The mantles of Uranus and Neptune are composed mainly of water, methane, and ammonia. Conventional experimental studies have investigated the internal structure of icy planets by examining the high-pressure and high-temperature behavior of these mantle materials. However, these studies have mainly dealt with single-component systems, and there have been very few studies of multi-component systems. In this study, high-pressure and high-temperature experiments were performed in multi-component systems that reproduces the mantle of an ice planet. The results show that the conditions for molecular dissociation and polymerization of methane are significantly affected by the influence of water. In particular, in the C-O-H system, the conditions for the formation of diamond from methane were found to shift about 1400 K lower than in the methane single-component system.

Academic Significance and Societal Importance of the Research Achievements

本研究課題の実施により得られた成果は、より現実的な氷惑星内部における氷マントル物質の挙動の理解に役立つものであり、氷惑星の内部構造モデルの構築のみならず、氷惑星の特異な磁場の発現原因を探る上でも重要な成果である。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (27 results)

All 2023 2022 2021 2020 2019

All Journal Article (14 results) (of which Peer Reviewed: 10 results,  Open Access: 7 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Significance of the high-pressure properties and structural evolution of gas hydrates for inferring the interior of icy bodies2023

    • Author(s)
      Hirai Hisako、Kadobayashi Hirokazu
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 10 Issue: 1 Pages: 3-3

    • DOI

      10.1186/s40645-023-00534-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Equation of states for dense ice up to 80 GPa at low-temperature conditions2022

    • Author(s)
      Hiroshi Fukui, Hirokazu Kadobayashi, Hirotaka Abe, Ryunosuke Takahashi, Hiroki Wadati, Naohisa Hirao
    • Journal Title

      The Journal of Chemical Physics

      Volume: 156 Issue: 6 Pages: 064504-064504

    • DOI

      10.1063/5.0084278

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 天王星と海王星の内部条件下におけるメタンハイドレートからのダイヤモンド生成2022

    • Author(s)
      門林宏和
    • Journal Title

      NEW DIAMOND

      Volume: 145 Pages: 26-27

    • Related Report
      2021 Research-status Report
  • [Journal Article] Diamond formation from methane hydrate under the internal conditions of giant icy planets2021

    • Author(s)
      Kadobayashi Hirokazu、Ohnishi Satoka、Ohfuji Hiroaki、Yamamoto Yoshitaka、Muraoka Michihiro、Yoshida Suguru、Hirao Naohisa、Kawaguchi-Imada Saori、Hirai Hisako
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 8165-8165

    • DOI

      10.1038/s41598-021-87638-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 室温超高圧・高温高圧下におけるメタンハイドレートの安定性と相転移機構2021

    • Author(s)
      門林宏和
    • Journal Title

      高圧力の科学と技術

      Volume: 30 Pages: 311-311

    • NAID

      130008028879

    • Related Report
      2021 Research-status Report
  • [Journal Article] Effect of Ammonia on Methane Hydrate Stability under High-Pressure and High-Temperature Conditions2020

    • Author(s)
      Kadobayashi Hirokazu、Hirai Hisako、Ohfuji Hiroaki、Kawamura Hideaki、Muraoka Michihiro、Yoshida Suguru、Yamamoto Yoshitaka
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 124 Issue: 51 Pages: 10890-10896

    • DOI

      10.1021/acs.jpca.0c09652

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sequential in situ Raman spectroscopy for observing dissociation behavior of filled‐ice Ih of methane hydrate at high pressure2020

    • Author(s)
      Kadobayashi Hirokazu、Hirai Hisako、Suzuki Keita、Ohfuji Hiroaki、Muraoka Michihiro、Yoshida Suguru、Yamamoto Yoshitaka
    • Journal Title

      Journal of Raman Spectroscopy

      Volume: 51 Issue: 12 Pages: 2536-2542

    • DOI

      10.1002/jrs.6012

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] High-pressure phase transition of methane hydrate in water-methane-ammonia system2020

    • Author(s)
      Kadobayashi Hirokazu、Hirai Hisako、Machita Kenji、Ohfuji Hiroaki、Muraoka Michihiro、Yoshida Suguru、Yamamoto Yoshitaka
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1609 Issue: 1 Pages: 012006-012006

    • DOI

      10.1088/1742-6596/1609/1/012006

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stability of methane hydrate at high-pressure and high-temperature of up to 40 GPa and 573 K2020

    • Author(s)
      Kadobayashi Hirokazu、Ohfuji Hiroaki、Hirai Hisako、Ohtake Michika、Yamamoto Yoshitaka
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1609 Issue: 1 Pages: 012007-012007

    • DOI

      10.1088/1742-6596/1609/1/012007

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structural evolution of methane hydrate under pressures up to 134 GPa2020

    • Author(s)
      Kadobayashi Hirokazu、Hirai Hisako、Ohfuji Hiroaki、Ohtake Michika、Muraoka Michihiro、Yoshida Suguru、Yamamoto Yoshitaka
    • Journal Title

      The Journal of Chemical Physics

      Volume: 152 Issue: 19 Pages: 194308-194308

    • DOI

      10.1063/5.0007511

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Retention of filled-ice structure of methane hydrate up to 134 GPa2020

    • Author(s)
      Hirokazu Kadobayashi, Hisako Hirai, Yoshitaka Yamamoto
    • Journal Title

      Photon Factory Activity Report 2019

      Volume: 37 Pages: 24-24

    • Related Report
      2020 Research-status Report
    • Open Access
  • [Journal Article] High-pressure X-ray diffraction study on the phase transition of methane hydrate in water-methane-ammonia system2020

    • Author(s)
      Hirokazu Kadobayashi, Hisako Hirai, Yoshitaka Yamamoto
    • Journal Title

      Photon Factory Activity Report 2019

      Volume: 37 Pages: 74-74

    • Related Report
      2020 Research-status Report
    • Open Access
  • [Journal Article] Conical support for double-stage diamond anvil apparatus2019

    • Author(s)
      Sakai Takeshi、Yagi Takehiko、Takeda Ryosuke、Hamatani Toshiki、Nakamoto Yuki、Kadobayashi Hirokazu、Mimori Hideto、I. Kawaguchi Saori、Hirao Naohisa、Kuramochi Keitaro、Ishimatsu Naoki、Kunimoto Takehiro、Ohfuji Hiroaki、Ohishi Yasuo、Irifune Tetsuo、Shimizu Katsuya
    • Journal Title

      High Pressure Research

      Volume: 40 Issue: 1 Pages: 12-21

    • DOI

      10.1080/08957959.2019.1691190

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Review: high pressure generation techniques beyond the limit of conventional diamond anvils2019

    • Author(s)
      Yagi Takehiko、Sakai Takeshi、Kadobayashi Hirokazu、Irifune Tetsuo
    • Journal Title

      High Pressure Research

      Volume: 40 Issue: 1 Pages: 148-161

    • DOI

      10.1080/08957959.2019.1704753

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 高圧力下におけるステアリン酸の融解挙動2022

    • Author(s)
      門林宏和、川村英彰、大藤弘明、境毅、河口沙織、中野智志、平井寿子
    • Organizer
      第63回高圧討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 2段式およびトロイダル型 DAC による極高圧発生の試み2022

    • Author(s)
      境毅、門林宏和、増田翔太、中本有紀、河口沙織、清水克哉
    • Organizer
      第63回高圧討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 天王星と海王星の内部におけるダイヤモンド生成の可能性2022

    • Author(s)
      門林宏和
    • Organizer
      第8回愛媛大学先進超高圧科学研究拠点(PRIUS)シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 氷惑星内部におけるダイヤモンドの生成条件の検討2021

    • Author(s)
      門林宏和、境毅、大西里佳、山本佳孝、村岡道弘、吉田卓、平井寿子、中野智志
    • Organizer
      第62回高圧討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Effect of ammonia on the stability of methane hydrate under high-pressure and high-temperature2019

    • Author(s)
      Hirokazu Kadobayashi, Hisako Hirai, Hiroaki Ohfuji, Hideaki Kawamura, Michika Ohtake, Yoshitaka Yamamoto
    • Organizer
      JpGU Meeting
    • Related Report
      2019 Research-status Report
  • [Presentation] 氷天体内部条件下におけるメタンハイドレートの高温高圧安定性2019

    • Author(s)
      門林宏和, 平井寿子, 中野智志, 町田憲治, 大藤弘明, 川村英彰, 大竹道香, 山本佳孝
    • Organizer
      第60回高圧討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] アンモニア存在下におけるメタンハイドレートの室温高圧安定性2019

    • Author(s)
      町田憲治, 平井寿子, 門林宏和, 大藤弘明, 大竹道香, 山本佳孝
    • Organizer
      第60回高圧討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] Cavityつきアンビルによる高圧下屈折率測定2019

    • Author(s)
      三守秀門, 境毅, 門林宏和, 河口沙織, 平尾直久
    • Organizer
      第60回高圧討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] グラッシーカーボンからのナノ多結晶ダイヤモンド合成と圧縮挙動2019

    • Author(s)
      上田千晶, 入舩徹男, 國本健広, 有本岳史, 新名亨, 大藤弘明, 境毅, 門林宏和, 八木健彦, 河口沙織, 河口彰吾
    • Organizer
      第60回高圧討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] マルチメガバールにおける圧力スケールの相互比較2019

    • Author(s)
      境毅, 門林宏和, 三守秀門, 中本有紀, 加良勇輔, 八木健彦, 河口沙織, 平尾直久
    • Organizer
      第60回高圧討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] High-pressure and high-temperature behavior of methane hydrate in water-methane-ammonia system2019

    • Author(s)
      Hirokazu Kadobayashi, Hisako Hirai, Kenji Machita, Hiroaki Ohfuji, Hideaki Kawamura, Michika Ohtake, Yoshitaka Yamamoto
    • Organizer
      The 27th AIRAPT International Conference on High Pressure Science and Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] High pressure and high temperature stability of methane hydrate in water-methane-ammonia system2019

    • Author(s)
      Hirokazu Kadobayashi, Hisako Hirai, Hiroaki Ohfuji, Hideaki Kawamura, Michika Ohtake, Yoshitaka Yamamoto
    • Organizer
      The 57th European High Pressure Research Group Meeting on High Pressure Science and Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Phase transition mechanisms of methane hydrate under high pressure by time-resolved XRD and Raman spectroscopy2019

    • Author(s)
      Hisako Hirai, Hirokazu Kadobayashi, Naohisa Hirao, Yasuo Ohishi, Michika Ohtake, Yoshitaka Yamamoto
    • Organizer
      The 57th European High Pressure Research Group Meeting on High Pressure Science and Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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