Solubility of CO2 in imidazolium-based tetrafluoroborate ionic liquids

被引：112

作者：

Chen, YH

Zhang, SJ ^{[1
]}

Yuan, XL

Zhang, YQ

Zhang, XP

Dai, WB

Mori, R

机构：

[1] Chinese Acad Sci, Inst Proc Engn, Res Lab Chem Engn Technol, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Mitsubishi Mat Corp, Business Incubat Dept, SCF Solut Grp, Naka, Ibaraki 3110102, Japan

来源：

THERMOCHIMICA ACTA | 2006年 / 441卷 / 01期

关键词：

imidazolium tetrafluoroborate; CO2; ionic liquids; solubility; correlation;

D O I：

10.1016/j.tca.2005.11.023

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The solubility Of CO2 in imidazolium ionic liquids (ILs), 1-butyl-3-methyl imidazolium tetrafluoroborate ([bmim][BF4]), 1-hexyl-3-methyl imidazolium tetrafluoroborate ([hmim] [BF4]) and 1-octyl-3-methyl imidazolium teirtafluoroborate ([omim] [BF4]) was determined at 305-25 K and pressures from 1 to 9 MPa. The influence of chain length of alkyl substituents on the imidazolium cation on the solubility of CO2 was investigated. The differences in solubility with chain length are in the sequence [omim][BF4] > [hmim][BF4] > [bmim][BF4]. The solubility data were correlated by the extended Henry's law, and enthalpy, Gibbs free energy and entropy changes were obtained. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：42 / 44

页数：3

共 15 条

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