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

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

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003phrvb..68q2102h&link_type=abstract

Physical Review B, vol. 68, Issue 17, id. 172102

Physics

19

X-Ray Diffraction And Scattering, Structure Of Specific Crystalline Solids

Scientific paper

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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