文献类型：期刊文献

英文题名：Coexistence curves of ionic liquid in oil microemulsions of {[bmim][BF 4] + T-X100 + cyclohexane} with various molar ratio of [bmim][BF 4] to T-X100 in the critical region

作者：Lü, Huihong[1]; An, Xueqin[2]; Shen, Weiguo[1,2]

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

年份：2012

卷号：48

起止页码：48

外文期刊名：Journal of Chemical Thermodynamics

收录：EI(收录号：20120814784110)

语种：英文

外文关键词：Microemulsions - Cyclohexane - Polyethylene oxides - Volume fraction - Refractive index

摘要：The coexistence curves (T, n), (T, Φ), and (T, Ψ) (n, Φ, and Ψ are the refractive index, volume fraction, and effective volume fraction, respectively) for the ionic liquid microemulsion systems of {polyoxyethylene tert-octylphenyl ether (T-X100) + 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) + cyclohexane} with various molar ratio (ω) of [bmim][BF4] to T-X100 have been determined by measuring refractive indices at a constant pressure in the critical region. The critical temperatures (Tc) and critical volume fraction (Φc) were obtained for the ionic liquid microemulsions. The critical exponents were deduced precisely from the coexistence curves within about 1 K below Tc and the values were consistent with the 3D Ising value. ? 2011 Elsevier Ltd. All rights reserved.