Hydrogen in earth and planetary materials observed by high-pressure diamond anvil cell NMR
| Project/Area Number |
23340161
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Okayama University |
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Principal Investigator |
OKUCHI Takuo 岡山大学, 地球物質科学研究センター, 准教授 (40303599)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHINO Takashi 岡山大学, 地球物質科学研究センター, 准教授 (30423338)
SASAKI Shigeo 岐阜大学, 工学部, 教授 (30196159)
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| Co-Investigator(Renkei-kenkyūsha) |
YAMASHITA Shigeru 岡山大学, 地球物質科学研究センター, 准教授 (30260665)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2011: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Keywords | ＮＭＲ / 水素 / 高圧力 / NMR |
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| Outline of Final Research Achievements |
Chemcial bonding state and microscopic dynamics of hydrogen in minerals, ices and gas hydrates at high pressure are important problems in earth and planetary material sciences. Diamond anvil cell nuclear magnetic resonance spectroscopy is an unique probe to determine microscopic structure and dynamics of hydrogenous materials confined at high pressures. Here we successfully applied this technique to observe hydrogen's dynamics in hydrogen hydrate and in fluid hydogen in situ at high pressures to 5 GPa. In addition to this achievement, we have also determined hydrogen diffusion coefficients in brucite at high pressure and temperature conditions. We also newly developed a technique to observe neutron diffraction of methane hydrate at a few gigapascals of pressures.
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] Synthesis of large and homogeneous single crystals of water-bearing minerals by slow cooling at deep-mantle pressures2015
Author(s)
Okuchi, T., N. Purevjav, N. Tomioka, J. F. Lin, T. Kuribayashi, L. Schoneveld, H. Hwang, N. Sakamoto, N. Kawasaki, and H. Yurimoto
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Journal Title
American Mineralogist
Volume: 100
Issue: 7
Pages: 1483-1492
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Pulsed neutron powder diffraction at high pressure by a capacity-increased sapphire anvil cell2013
Author(s)
T. Okuchi, M. Yoshida, Y. Ohno, N. Tomioka, N. Purevjav, T. Osakabe, S. Harjo, J. Abe, K. Aizawa, S. Sasaki
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Journal Title
High Pressure Research
Volume: Vol. 33, No.4
Issue: 4
Pages: 777-786
DOI
Related Report
Peer Reviewed
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[Presentation] Neutron diffraction study of hydrous ringwoodite2013
Author(s)
Purevjav, N., Okuchi, T., Tomioka, N., Abe, J., Harjo, S., and Aizawa, K
Organizer
鉱物科学会
Place of Presentation
筑波大学
Year and Date
2013-09-11 – 2014-09-13
Related Report
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