Molar volumes and viscosities of LiClO4 and LiBr in propylene carbonate plus 1,2-dimethoxyethane mixed solvents at 298.15 K

被引：7
|
作者：
Zhao, Yang
Wang, Jianji [1 ]
Yan, Zhenning
Zhuo, Kelei
机构：
[1] Henan Normal Univ, Dept Chem, Xinxiang 453007, Henan, Peoples R China
[2] Zhengzhou Univ, Dept Chem, Zhengzhou 450052, Peoples R China
来源：
FLUID PHASE EQUILIBRIA | 2006年 / 244卷 / 02期
基金：
中国国家自然科学基金;
关键词：
molar volume; viscosity; lithium salts; propylene carbonate; 1.2-dimethoxyethane; mixed solvents;
D O I：
10.1016/j.fluid.2006.04.001
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The standard partial molar volumes, viscosity B-coefficients and activation free energies of lithium salts (LiClO4 and LiBr) in propylene carbonate (PC) with 1,2-dimethoxyethane (DME) mixed solvents have been determined as a function of the mole fraction of DME at 298.15 K from precise density and viscosity measurements. The values studied are all positive and decrease monotonously with addition of DME in the PC, which indicates that nature of the solvents plays an important role. The effects are discussed in terms of preferential solvation and packing effect in the solvation shell and electrostriction. The differences between ClO4- and Br- have also been discussed. (c) 2006 Elsevier B.V. All rights reserved.
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页码：105 / 110
页数：6
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