Retention of filled ice structure of methane hydrate up to 42 GPa | Zendy

Hisako Hirai | Zendy; T Tanaka | Zendy; Tomohiko Kawamura | Zendy; Yoshitaka Yamamoto | Zendy; T. Yagi | Zendy

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Retention of filled ice structure of methane hydrate up to 42 GPa

Author(s) -

Hisako Hirai,

T Tanaka,

Tomohiko Kawamura,

Yoshitaka Yamamoto,

T. Yagi

Publication year - 2003

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.68.172102

Subject(s) - methane , compressibility , hydrate , clathrate hydrate , volume (thermodynamics) , materials science , anisotropy , diamond anvil cell , ice ih , diffraction , thermodynamics , mineralogy , geology , high pressure , chemistry , optics , molecule , physics , organic chemistry

High-pressure experiments on methane hydrate were performed in the pressure range of 0.2–42 GPa using diamond-anvil cell. In situ x-ray-diffraction study revealed that methane hydrate of a high-pressure form, filled ice structure, survived up to 42 GPa. Pressure versus volume data were obtained in the pressure region. The filled ice structure represented large anisotropic compressibility and the volume change attained 40% at 42 GPa. The anisotropic compressibility was explained by the characteristic channel framework of the filled ice structure

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