文献类型：期刊文献

英文题名：Properties of pure 1,1,3,3-tetramethylguanidine imidazole ionic liquid and its binary mixtures with alcohols at T = (293.15 to 313.15) K

作者：Chen, Jiayi[1];Chen, Lingxiao[1];Xu, Yingjie[1]

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

年份：2015

卷号：88

起止页码：110

外文期刊名：JOURNAL OF CHEMICAL THERMODYNAMICS

收录：SCI-EXPANDED(收录号：WOS:000355153800015)、、WOS

基金：The authors are grateful for the financial supports from the National Science Foundation of China (No. 21406140) and Undergraduate Scientific and Technological Innovation Project of Shaoxing University.

语种：英文

外文关键词：Ionic liquid; 1,1,3,3-Tetramethylguanidine imidazole; Density; Viscosity; Excess property

外文摘要：Densities and viscosities of the pure ionic liquid 1,1,3,3-tetramethylguanidine imidazole ([TMG]IM) and its binary mixtures with methanol, ethanol, 1-propanol, and 1-butanol were measured at temperatures from T = (293.15 to 313.15) K. The thermal expansion coefficient, molecular volume, standard entropy, and lattice energy of [TMG] IM were obtained from the experimental density value. The temperature dependence of the viscosity of [TMG] IM was fitted to the fluidity equation. Excess molar volumes V-E and viscosity deviations Delta eta of the binary mixtures were calculated and fitted to the Redlich-Kister equation with satisfactory results. The result shows that the V-E values of the binary mixtures are negative over the whole composition range, while Delta eta values have an S-shape deviation. Temperature has little effect on the V-E of the systems, but it has significant effect on the Delta eta. Furthermore, the absolute values of VE for {[TMG] IM (1) + alcohol (2)} systems at the same temperature decrease with increasing carbon alkyl chain of the primary alcohol. Other derived properties, such as the apparent molar volumes, partial molar volumes, excess partial molar volumes, Gibbs free energy of activation for viscous flow, and excess Gibbs free energy of activation for viscous flow of the above-mentioned systems were also calculated. (C) 2015 Elsevier Ltd. All rights reserved.