Diffusion coefficients and conductivities of alkylimidazolium tetrafluoroborates and hexafluorophosphates

被引：52

作者：

Su, Wen Cheng

Chou, Cheng Huang

Wong, David Shan Hill ^{[1
]}

Li, Meng Hui

机构：

[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu, Taiwan

[2] Ta Hwa Inst Technol, Dept Chem & Mat Engn, Hsinchu, Taiwan

[3] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Chungli, Taiwan

[4] Chung Yuan Christian Univ, Dept Chem Engn, Chungli, Taiwan

来源：

FLUID PHASE EQUILIBRIA | 2007年 / 252卷 / 1-2期

关键词：

diffusion coefficient; conductivity; ionic liquid; alkylimidazolium tetrafluoroborate; alkylimidazolium hexafluorophosphate;

D O I：

10.1016/j.fluid.2006.12.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this study, diffusion coefficients of alkylimidazolium tetrafluoroborates and hexafluorophosphates ionic liquids in water at room temperature were measured by the Taylor dispersion experiment. The Wilke-Chang equation underestimated the diffusion coefficient, but a modified Wilke-Chang equation correlated diffusion coefficients well with molar volumes. The conductivities of these ion liquids were also measured. Infinite dilute conductances were calculated. The Nernst-Haskell equation accurately estimated diffusion coefficients using the infinite dilute conductance obtained. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：74 / 78

页数：5

共 36 条

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