Phase equilibria for the ionic semiclathrate hydrate formed with tetrabutylphosphonium chloride plus CO2, CH4, or N2

被引：18

作者：

Iino, Kento A ^{[1
]}

Sakakibara, Yusuke ^{[1
]}

Suginaka, Takuya ^{[1
]}

Ohmura, Ryo ^{[1
]}

机构：

[1] Keio Univ, Dept Mech Engn, Yokohama, Kanagawa 2238522, Japan

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2014年 / 71卷

关键词：

Clathrate hydrates; Semiclathrate hydrates; Tetrabutylphosphonium chloride; Phase equilibrium; N-BUTYLAMMONIUM BROMIDE; CARBON-DIOXIDE; HYDROGEN STORAGE; GAS; SEPARATION; METHANE; WATER; FLUORIDE; NITROGEN; CAPTURE;

D O I：

10.1016/j.jct.2013.12.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper presents the phase equilibrium conditions for the semiclathrate hydrates in the systems of (CO2, CH4 or N-2 + tetrabutylphosphonium chloride + water). The experiments were performed by isochoric method within the range of temperature from (283.0 to 291.8) K and pressure from (0.19 to 5.02) MPa with mass fraction of tetrabutylphosphonium chloride aqueous solution 0.36. The presence of tetrabutylphosphonium chloride increases the phase equilibrium temperatures of CO2, CH4 or N-2 hydrates by at least 8 K at a given pressure. The gas separation performance in tetrabutylphosphonium chloride hydrate systems was compared with that in other semiclathrate hydrate systems, based on the measured phase equilibrium conditions. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：133 / 136

页数：4

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