文献类型：期刊文献

英文题名：Liquid-liquid phase equilibrium and heat capacity of binary solution {2-propanol+1-octy1-3-methylimidazolium hexafluorophosphate}

作者：Guo, Yimin[1];Zhang, Xianshuo[1];Xu, Chen[2];Shen, Weiguo[1,2]

机构：[1]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：105

起止页码：434

外文期刊名：JOURNAL OF CHEMICAL THERMODYNAMICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000390495700048)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 21173080, 21373085, 21303055 and 21403098).

语种：英文

外文关键词：Ionic liquid; Coexistence curve; Heat capacity; Complete scaling theory; Restricted primitive model

摘要：The liquid-liquid coexistence curve and the heat capacity for binary solution of (2-propanol + 1-octyl-3-methylimidazolium hexafluorophosphate) have been precisely measured. The values of the critical exponents alpha and beta, characterizing the critical anomalies of the heat capacity and the coexistence curve respectively, were deduced and found to be consistent with theoretical predictions. The asymmetric behavior of the diameter of the coexistence curve was studied in the frame of the complete scaling theory, demonstrating that the heat capacity related term is of importance. Furthermore, the restricted primitive model (RPM) was used to calculate the reduced upper consolute temperature and density, which together with a comparative larger value of A(+) indicated a character of solvophobic criticality. (C) 2016 Elsevier Ltd.