Pressure-induced amorphization of clathrate hydrates

Hideki Tanaka, Yukako Amano

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Compression and decompression of clathrate hydrates have been carried out in order to investigate the onset pressures above which the crystalline forms begin to collapse at OK and do not revert back to the original structures upon decompression. Several proton-disordered structures of clathrate hydrate I encapsulating noble gases were subjected to compression, the steepest descent minimization of potential energy, the subsequent expansion to the original volume, and the steepest descent minimization. It was found that above the onset pressure, depending on guest species, even the fully occupied hydrates are compressed inelastically, and transformed into amorphous forms from which crystalline structures are no longer recovered by decompression at 0 K.

Original languageEnglish
Pages (from-to)2183-2188
Number of pages6
JournalMolecular Physics
Volume100
Issue number14
DOIs
Publication statusPublished - Jul 20 2002

Fingerprint

Amorphization
clathrates
pressure reduction
Decompression
Hydrates
hydrates
descent
Pressure
Crystalline materials
Noble Gases
optimization
encapsulating
Potential energy
Protons
rare gases
Compaction
potential energy
expansion
protons

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Pressure-induced amorphization of clathrate hydrates. / Tanaka, Hideki; Amano, Yukako.

In: Molecular Physics, Vol. 100, No. 14, 20.07.2002, p. 2183-2188.

Research output: Contribution to journalArticle

Tanaka, Hideki ; Amano, Yukako. / Pressure-induced amorphization of clathrate hydrates. In: Molecular Physics. 2002 ; Vol. 100, No. 14. pp. 2183-2188.
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