Hydrogen hydrate under high-pressure: filled-ice II structure
Hydrogen hydrate is an inclusion compound in which a hydrogen-bonded crystalline water ice structure accommodates hydrogen molecules in cages or channels. It has been suggested as candidate material for hydrogen storage applications and attracted considerable attention during the last decade. In addition, it is likely to exist in nature since hydrogen and water ice are common constituents of the universe. We recently measured the ambient-temperature equation of state of hydrogen hydrate on D20 up to 4 GPa on the very small sample contained in a Paris-Edinburgh press. Here we propose to measure a larger sample at 1 GPa to determine the atomic positions and guest occupancy of hydrogen hydrate in structure C1.
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RANIERI Umbertoluca; BOVE Livia Eleonora; R. Gaal; Thomas C. Hansen; KLOTZ Stefan; KOZA Michael Marek and KUHS Werner Friedrich. (2018). Hydrogen hydrate under high-pressure: filled-ice II structure. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-22-756
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