文献类型：期刊文献

英文题名：Thermodynamic properties of aqueous solutions of two ammonium-based protic ionic liquids at 298.15 K

作者：Hou, Mengyin[1];Xu, Yingjie[1];Han, Yajuan[1];Chen, Bin[1];Zhang, Wenxia[1];Ye, Qinghua[1];Sun, Jinzhi[1]

机构：[1]Shaoxing Univ, Dept Chem, Shaoxing 312000, Zhejiang, Peoples R China

年份：2013

卷号：178

起止页码：149

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：SCI-EXPANDED(收录号：WOS:000314192600022)、、EI(收录号：20130315906439)、Scopus(收录号：2-s2.0-84871395353)、WOS

基金：The authors are grateful for the financial supports from the National Natural Science Foundation of Zhejiang Province (no. Y4090453).

语种：英文

外文关键词：Protic ionic liquid; Ethylammonium acetate; Propylammonium acetate; Thermodynamic properties

外文摘要：Densities (p). refractive indices (n(D)) and electrical conductivities (kappa) of ethylammonium acetate (N2Ac) protic ionic liquid + water and propylammonium acetate (N3Ac) protic ionic liquid + water binary mixtures over the entire composition range were measured at 298.15 K under atmospheric pressure. The excess molar volumes (V-E), apparent molar volumes (V-Phi I), partial molar volumes(V-m.i) and excess partial molar volumes (V-m(E) (j)) of the binary mixtures were calculated from the density data. The refractive index deviations (Delta n(D)) of the binary mixtures were determined using the refractive index data. The excess molar volumes and refractive index deviations were correlated with the Redlich-Kister equation. The excess molar volumes of the above-mentioned systems are negative over the whole composition range, while the refractive index deviations are positive. The concentration dependence of electrical conductivity was fitted according to the empirical Casteel-Amis equation. The intermolecular interactions and structural effects were analyzed on the basis of the measured and the derived properties. (C) 2012 Elsevier B.V. All rights reserved.