Competitive cage occupancy of hydrogen and argon in structure-II hydrates

The cage occupancy of hydrogen in the single-crystals of simple hydrogen hydrates and hydrogen + argon mixed-gas hydrates was investigated by means of in situ Raman spectroscopy under the three-phase (hydrate + water + fluid) equilibrium condition. In the equilibrium pressure region higher than appr...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Fluid phase equilibria 2010-11, Vol.298 (1), p.113-116
Hauptverfasser:	Amano, Shingo, Tsuda, Takaaki, Hashimoto, Shunsuke, Sugahara, Takeshi, Ohgaki, Kazunari
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Argon Cage Cage occupancy Clusters Energy Equilibrium conditions Exact sciences and technology Fluid dynamics Fuels Gas characteristics and properties. Sampling. Analysis Gas hydrate Gas industry High pressure Hydrates Hydrogen Liquid nitrogen Phase equilibria Raman spectroscopy
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The cage occupancy of hydrogen in the single-crystals of simple hydrogen hydrates and hydrogen + argon mixed-gas hydrates was investigated by means of in situ Raman spectroscopy under the three-phase (hydrate + water + fluid) equilibrium condition. In the equilibrium pressure region higher than approximately 25 MPa, four hydrogen cluster and argon competitively occupied the large cages of structure-II hydrogen + argon mixed-gas hydrates. In addition, Raman spectroscopic analysis at liquid nitrogen temperature (77 K) supports that the clusters of two, three, or four hydrogen molecules occupy large cages.
ISSN:	0378-3812 1879-0224
DOI:	10.1016/j.fluid.2010.07.017