Activity coefficients at infinite dilution of organic solutes in N-alkylpyridinium bis(trifluoromethylsulfonyl)imide ([CnPY][NTf2], n=2, 4, 5) using gas-liquid chromatography

被引：24
|
作者：
Yan, Pei-Fang [1 ]
Liu, Qing-Shan [1 ]
Yang, Miao [1 ]
Liu, Xiu-Mei [1 ]
Tan, Zhi-Cheng [1 ,2 ]
Welz-Biermann, Urs [1 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian 116023, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2010年 / 42卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Ionic liquids; Gas-liquid chromatography; Activity coefficients at infinite dilution; N-Alkylpyridinium; bis(trifluoromethylsulfonyl)imide ILs; TEMPERATURE IONIC LIQUIDS; THERMODYNAMIC PROPERTIES; ALKYL BENZENES; MIXTURES; IMIDE; HYDROCARBONS; ALCOHOLS; ESTERS; ALDEHYDES; PREDICTION;
D O I：
10.1016/j.jct.2010.06.009
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The activity coefficients at infinite dilution, gamma(infinity)(i) for both polar and non-polar solutes in the ionic liquids N-alkylpyridinium bis(trifluoromethylsulfonyl)imide ([CnPY][NTf2], n = 2. 4. 5) have been determined by gas-liquid chromatography using the ionic liquid as the stationary phase. The measurements were carried out at the temperatures from (303 to 353) K. The partial molar excess enthalpies at infinite dilution H-i(E,infinity) of the solutes in the ionic liquids were also derived from the temperature dependence of the gamma(infinity)(i) values. The values of the selectivity for the hexane/benzene and cyclohexane/benzene separation problems were calculated from experimental infinite dilution activity coefficient values and compared to the other ionic liquids, taken from the recent literatures. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1415 / 1422
页数：8
相关论文
共 50 条
12345