Phase equilibrium for structure-H hydrates at temperatures below the freezing point of water

Ryo Ohmura, Sadatoshi Matsuda, Tsutomu Uchida, Takao Ebinuma, Hideo Narita

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Four-phase (ice + structure-H hydrate + large-molecule guest substance liquid + methane-rich vapor) equilibrium pressure-temperature conditions were measured at temperatures from 252 K to 272 K in systems of water + methane + LMGS, where LMGS is a large-molecule guest substance for a structure-H hydrate. The tested LMGSs were 2,2-dimethylbutane (neohexane), methylcyclohexane, and tert-butyl methyl ether. The results obtained in the 2,2-dimethylbutane system agree with the corresponding data reported by Makogon et al., which were the only data set on the structure-H hydrate phase equilibrium at temperatures below the freezing point of water. Among the three systems studied, the lowest equilibrium pressure at a given temperature was observed in the 2,2-dimethylbutane system, and the highest, in the fert-butyl methyl ether system.

Original languageEnglish
Pages (from-to)993-996
Number of pages4
JournalJournal of Chemical and Engineering Data
Volume50
Issue number3
DOIs
Publication statusPublished - 2005 May
Externally publishedYes

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Hydrates
Freezing
Phase equilibria
Water
Ethers
Liquid methane
Methyl Ethers
Temperature
Molecules
Methane
Ice
Vapors
Hydrogen

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Phase equilibrium for structure-H hydrates at temperatures below the freezing point of water. / Ohmura, Ryo; Matsuda, Sadatoshi; Uchida, Tsutomu; Ebinuma, Takao; Narita, Hideo.

In: Journal of Chemical and Engineering Data, Vol. 50, No. 3, 05.2005, p. 993-996.

Research output: Contribution to journalArticle

Ohmura, Ryo ; Matsuda, Sadatoshi ; Uchida, Tsutomu ; Ebinuma, Takao ; Narita, Hideo. / Phase equilibrium for structure-H hydrates at temperatures below the freezing point of water. In: Journal of Chemical and Engineering Data. 2005 ; Vol. 50, No. 3. pp. 993-996.
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