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

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

doi:10.1021/je0495381

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 journal › Article › peer-review

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 language	English
Pages (from-to)	993-996
Number of pages	4
Journal	Journal of Chemical and Engineering Data
Volume	50
Issue number	3
DOIs	https://doi.org/10.1021/je0495381
Publication status	Published - 2005 May 1
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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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.",

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T1 - Phase equilibrium for structure-H hydrates at temperatures below the freezing point of water

AU - Ohmura, Ryo

AU - Matsuda, Sadatoshi

AU - Uchida, Tsutomu

AU - Ebinuma, Takao

AU - Narita, Hideo

PY - 2005/5/1

Y1 - 2005/5/1

N2 - 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.

AB - 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.

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

Abstract

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