Self diffusion and conductivity in Nafion(R) membranes in contact with NaCl+CaCl2 solutions

被引：75

作者：

Pourcelly, G ^{[1
]}

Sistat, P ^{[1
]}

Chapotot, A ^{[1
]}

Gavach, C ^{[1
]}

Nikonenko, V ^{[1
]}

机构：

[1] KUBAN STATE UNIV,DEPT PHYS CHEM,KRASNODAR 350751,RUSSIA

来源：

JOURNAL OF MEMBRANE SCIENCE | 1996年 / 110卷 / 01期

关键词：

perfluorinated membranes; self-diffusion; radiotracers; conductivity; impedance;

D O I：

10.1016/0376-7388(95)00232-4

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The ion-exchange isotherm of sodium and calcium ions is drawn for the Nafion(R) 117 membrane in contact with [ NaCl] + 2 [CaCl2] = 0.1 M. The self-diffusion coefficients of sodium and calcium ions, obtained from steady-state self-diffusion ionic fluxes by a radiotracer method are independent of the ionic composition of the membrane phase. They are compared to those obtained from high frequency electrical resistance by means of the ac impedance technique. The values of electric conductivity of the membrane can be derived from a simple additivity law.

引用

页码：69 / 78

页数：10

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