Carbon dioxide solubility in 1-ethyl-3-methylimidazolium trifluoromethanesulfonate

被引：57

作者：

Soriano, Allan N. ^{[1
,2
]}

Doma, Bonifacio T., Jr. ^{[3
]}

Li, Meng-Hui ^{[1
,2
]}

机构：

[1] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Chungli 32023, Taiwan

[2] Chung Yuan Christian Univ, Dept Chem Engn, Chungli 32023, Taiwan

[3] Mapua Inst Technol, Sch Chem Engn & Chem, Manila, Philippines

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2009年 / 41卷 / 04期

关键词：

Carbon dioxide; Absorption; Equilibrium solubility; 1-Ethyl-3-methylimidazolium trifluoromethanesulfonate; TEMPERATURE IONIC LIQUIDS; PRESSURE PHASE-BEHAVIOR; THERMODYNAMIC PROPERTIES; 1-BUTYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE; GAS SOLUBILITY; CO2; TETRAFLUOROBORATE; DENSITIES;

D O I：

10.1016/j.jct.2008.11.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this work, we present new solubility results for carbon dioxide in the ionic liquid 1-ethyl-3-methylimidazolium trifluoromethanesulfonate for temperatures ranging from (303.2 to 343.2) K and pressures up to 5.9 MPa using a thermogravimetric microbalance. Carbon dioxide solubilities were determined from absorption saturation (equilibrium) results at each fixed temperature and pressure. The buoyancy effect was accounted for in the evaluation of the carbon dioxide solubility. A highly accurate equation of state and a group contribution predictive method for carbon dioxide and for ionic liquids, respectively, were employed to determine the effect of buoyancy on carbon dioxide solubility. The solubility measurements are presented as a function of temperature and pressure. An extended Henry's law equation was used to correlate the present experimental solubility values and the result was satisfactory. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：525 / 529

页数：5

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