文献类型：期刊文献

英文题名：(Liquid + liquid) phase equilibria of binary mixtures 1-butyl-3-methylimidazolium tetrafluoroborate and tert-butanol or 1,2-butanediol

作者：Zheng, Peizhu[1]; Zhang, Xianshuo[1]; Yin, Tianxiang[2]; Shen, Weiguo[1,2]

机构：[1] Department of Chemistry, Lanzhou University, Lanzhou,Gansu, 730000, China; [2] School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2016

卷号：95

起止页码：26

外文期刊名：Journal of Chemical Thermodynamics

收录：EI(收录号：20155101679954)

语种：英文

外文关键词：Liquids - Phase separation - Temperature - Phase equilibria - Specific heat

摘要：Precise (liquid + liquid) coexistence curves of binary mixtures {1-butyl-3-methylimidazolium tetrafluoroborate ([C4mim][BF4]) + tert-butanol or RS-1,2-butanediol} have been measured. Critical exponent β and critical amplitude B0Z were deduced from the (liquid + liquid) equilibria data in the critical regions, and it was found that the critical exponent β coincided well with the 3D-Ising value. The complete scaling theory was applied to describe the asymmetry behavior of the diameter of the coexistence curves, which suggested that the heat capacity related term showed significant importance. The reduced critical temperature and density were calculated by the restricted primitive model (RPM), which were used to discuss the driven force of phase separation. Moreover, the dependences of the critical temperature, the critical mole fraction, the reduced critical temperature and the reduced critical density on the permittivity of alcohol for a series of binary solutions of RTIL in alcohols are discussed. ? 2015 Elsevier Ltd. All rights reserved.