Electrical Conductivity of Cation- and Anion-Exchange Membranes in Ampholyte Solutions

被引：26

作者：

Pismenskaya, N. D. ^{[1
]}

Belova, E. I. ^{[1
]}

Nikonenko, V. V. ^{[1
]}

Larchet, C. ^{[2
]}

机构：

[1] Kuban State Univ, Krasnodar 350040, Russia

[2] Univ Paris 12, Lab Mat Echangeurs Ions, F-94010 Creteil, France

来源：

RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2008年 / 44卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

electrical conductivity; cation- and anion-exchange membranes; ampholyte;

D O I：

10.1134/S1023193508110141

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Several laws governing ampholyte transport through ion-exchange membranes are established by a comparative analysis of the concentration dependence of electrical conductivity for homogeneous (CMX, AMX) and heterogeneous (MK-40, MA-41) membranes in NaCl, LysHCl, and NaH2PO4 solutions. The increase in the electrical conductivity of membranes in ampholyte solutions as the solutions become more dilute is explained by the increased fraction of divalent ions of the amino acid (cation-exchange membrane) or from phosphoric acid (anion-exchange membrane) in the membrane as a result of Donnan exclusion of hydrolysis products (hydroxide ions or protons, respectively).

引用

页码：1285 / 1291

页数：7

共 23 条

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BELAID NN, 1998, EUR POLYM J, V34, P564

[2] WATER ELECTROTRANSPORT IN MEMBRANE SYSTEMS - EXPERIMENT AND MODEL DESCRIPTION [J].