Phase equilibrium for structure II hydrates formed with krypton co-existing with cyclopentane, cyclopentene, or tetrahydropyran

Satoshi Takeya; Ryo Ohmura

doi:10.1021/je060233r

Phase equilibrium for structure II hydrates formed with krypton co-existing with cyclopentane, cyclopentene, or tetrahydropyran

Satoshi Takeya, Ryo Ohmura

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

This paper reports the pressure-temperature conditions for the vapor + liquid + liquid + hydrate four-phase equilibrium in the systems of krypton and water plus each of the following substances: cyclopentane, cyclopentene, and tetrahydropyran. The pressure ranges of the present measurements in the three systems are (0.116 to 7.664) MPa at temperatures from (283.8 to 308.5) K in the cyclopentane system, (0.121 to 2.047) MPa at temperatures from (280.2 to 297.1) K in the cyclopentene system, and (0.118 to 2.075) MPa at temperatures from (278.8 to 296.7) K in the tetrahydropyran system. These equilibrium pressures are lower by at least 4 MPa than those in the binary krypton + water system. The crystallographic structures of the hydrates are identified to be structure II based on the powder X-ray diffraction measurements.

Original language	English
Pages (from-to)	1880-1883
Number of pages	4
Journal	Journal of Chemical and Engineering Data
Volume	51
Issue number	5
DOIs	https://doi.org/10.1021/je060233r
Publication status	Published - 2006 Sept 1

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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@article{06205213095948708577232189126e90,

title = "Phase equilibrium for structure II hydrates formed with krypton co-existing with cyclopentane, cyclopentene, or tetrahydropyran",

abstract = "This paper reports the pressure-temperature conditions for the vapor + liquid + liquid + hydrate four-phase equilibrium in the systems of krypton and water plus each of the following substances: cyclopentane, cyclopentene, and tetrahydropyran. The pressure ranges of the present measurements in the three systems are (0.116 to 7.664) MPa at temperatures from (283.8 to 308.5) K in the cyclopentane system, (0.121 to 2.047) MPa at temperatures from (280.2 to 297.1) K in the cyclopentene system, and (0.118 to 2.075) MPa at temperatures from (278.8 to 296.7) K in the tetrahydropyran system. These equilibrium pressures are lower by at least 4 MPa than those in the binary krypton + water system. The crystallographic structures of the hydrates are identified to be structure II based on the powder X-ray diffraction measurements.",

author = "Satoshi Takeya and Ryo Ohmura",

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AU - Ohmura, Ryo

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N2 - This paper reports the pressure-temperature conditions for the vapor + liquid + liquid + hydrate four-phase equilibrium in the systems of krypton and water plus each of the following substances: cyclopentane, cyclopentene, and tetrahydropyran. The pressure ranges of the present measurements in the three systems are (0.116 to 7.664) MPa at temperatures from (283.8 to 308.5) K in the cyclopentane system, (0.121 to 2.047) MPa at temperatures from (280.2 to 297.1) K in the cyclopentene system, and (0.118 to 2.075) MPa at temperatures from (278.8 to 296.7) K in the tetrahydropyran system. These equilibrium pressures are lower by at least 4 MPa than those in the binary krypton + water system. The crystallographic structures of the hydrates are identified to be structure II based on the powder X-ray diffraction measurements.

AB - This paper reports the pressure-temperature conditions for the vapor + liquid + liquid + hydrate four-phase equilibrium in the systems of krypton and water plus each of the following substances: cyclopentane, cyclopentene, and tetrahydropyran. The pressure ranges of the present measurements in the three systems are (0.116 to 7.664) MPa at temperatures from (283.8 to 308.5) K in the cyclopentane system, (0.121 to 2.047) MPa at temperatures from (280.2 to 297.1) K in the cyclopentene system, and (0.118 to 2.075) MPa at temperatures from (278.8 to 296.7) K in the tetrahydropyran system. These equilibrium pressures are lower by at least 4 MPa than those in the binary krypton + water system. The crystallographic structures of the hydrates are identified to be structure II based on the powder X-ray diffraction measurements.

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Phase equilibrium for structure II hydrates formed with krypton co-existing with cyclopentane, cyclopentene, or tetrahydropyran

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