文献类型：期刊文献

英文题名：Critical phenomena in {bromobenzene+1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide} binary solution

作者：Tao, Xiaoyi[1];Yin, Tianxiang[1];Xu, Chen[1];Shen, Weiguo[1,2]

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

年份：2016

卷号：415

起止页码：184

外文期刊名：FLUID PHASE EQUILIBRIA

收录：;EI(收录号：20160801986526);WOS:【SCI-EXPANDED(收录号:WOS:000372761100021)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 21173080, 21373085, 21303055 and 21403067) and the Fundamental Research Funds for the Central Universities (No. WJ1516001).

语种：英文

外文关键词：Room temperature ionic solution; Coexistence curve; Heat capacity; Complete scaling theory; Asymmetric coefficient; Universal critical amplitude ratio

摘要：The liquid-liquid coexistence curve for binary solution (bromobenzene + 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C(6)mim][NTf2])} has been measured in both critical and non-critical regions. The isobaric heat capacities per unit volume were measured in one-phase and two-phase regions. Moreover, the turbidity measurements were also performed in the near-critical one-phase region. From the liquid-liquid equilibrium, heat capacity and turbidity data collected in the critical region, the critical exponents alpha, beta, gamma and nu were obtained and shown to be consistent with those predicted for the 3D-Ising universality class. The universal critical amplitude ratios R-B and X have been calculated and shown to reasonably coincide with the theoretical predicted values. The asymmetric behavior of the diameter of the coexistence curve was well described by the complete scaling theory, provided that the heat capacity related term was considered. Moreover, the coulombic criticality of the studied system was indicated by the small values of RPM reduced critical density and critical temperature. (C) 2016 Elsevier B.V. All rights reserved.