文献类型：期刊文献

英文题名：Description of the pVT behavior of ionic liquids and the solubility of gases in ionic liquids using an equation of state

作者：Wang, Tengfang; Peng, Changjun; Liu, Honglai; Hu, Ying

机构：[1]E China Univ Sci & Technol, Dept Chem, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2006

卷号：250

期号：1-2

起止页码：150

外文期刊名：FLUID PHASE EQUILIBRIA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000243232500018)】；

语种：英文

外文关键词：ionic liquids; pVT relationship; solubility of gas; equation of state

摘要：A molecular thermodynamic model developed previously for fluids of chain-like molecules has been extended to correlate the p VT behavior of onic liquids and the solubilities of gases such as CO2, C3H6, C3H8, C4H10 in various ionic liquids. The relative deviation between the calculated molar volume and experimental data is less than 0.2%. It is shown that this equation of state can be used to correlate the solubility Of CO2 in ionic liquids with only one temperature-independent adjustable interaction parameter, and the accuracy of the correlation can be further improved using two temperature-independent adjustable parameters. The water content of ionic liquids has a large influence on the calculated results. For systems with water content lower than 0.1%, the average relative deviations of bubble point pressure are 3.14 and 4.90% using two parameters and one parameter, respectively. For systems containing C3H6, C3H8 and C4H10 two temperature dependent adjustable parameters are needed to obtain a good fit, and the corresponding deviation of the gas solubility is less than 2%, except for CA. (c) 2006 Published by Elsevier B.V.