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

被引：51
作者：
Hirai, H [1 ]
Tanaka, T
Kawamura, T
Yamamoto, Y
Yagi, T
机构：
[1] Univ Tsukuba, Inst Geosci, Tsukuba, Ibaraki 3058571, Japan
[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan
[3] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
来源：
PHYSICAL REVIEW B | 2003年 / 68卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.68.172102
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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页数：4
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