Thermodynamic Description of Crystalline Water Phases Containing Hydrogen

R. K. Zhdanov, V. R. Belosludov, Yu Yu Bozhko, O. S. Subbotin, K. V. Gets, R. V. Belosludov

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Abstract

Stability regions of crystal phases in the water–hydrogen system have been studied within our statistical thermodynamic model for describing clathrate compounds. The thermodynamic stability of hydrogen-containing ices I h (C 0 Ih ), II (C 1 ), I c (C 2 ), classical clathrate hydrogen hydrate CS-II, and new hydrogen-filled ice phase C 0 has been analyzed. It has been shown that all considered phases are thermodynamically stable, but phase C 0 is metastable with respect to the other phases. The chemical potentials of water molecules in phases C 0 and C 1 are close to each other. As a result, metastable phase C 0 is experimentally observed in the stability region of phase C 1 .

Original languageEnglish
Pages (from-to)806-809
Number of pages4
JournalJETP Letters
Volume108
Issue number12
DOIs
Publication statusPublished - 2018 Dec 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Zhdanov, R. K., Belosludov, V. R., Bozhko, Y. Y., Subbotin, O. S., Gets, K. V., & Belosludov, R. V. (2018). Thermodynamic Description of Crystalline Water Phases Containing Hydrogen. JETP Letters, 108(12), 806-809. https://doi.org/10.1134/S0021364018240128