ALGINATE POLYELECTROLYTE IONOTROPIC GELS .2. KINETICS AND MECHANISM OF EXCHANGE OF CHELATED NICKEL(II) BY HYDROGEN-IONS IN CAPILLARY IONOTROPIC NICKEL ALGINATE POLYMEMBRANE GEL COMPLEX

被引：9

作者：

HASSAN, RM

机构：

[1] Department of Chemistry, Faculty of Science, Assiut University, Assiut

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 02期

关键词：

D O I：

10.1007/BF00357813

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

The kinetics and mechanism of exchange of Ni2+ by H+ ions in ionotropic nickel alginate polymembrane gels of capillary structure have been studied by pH-metric and conductimetric techniques. The rate of exchange conforms to; rate = k1 [nickel alginate] [H+] - k-1 [alginic acid] [Ni2+] with k1 = 6.34 x 10(-2) dm3mol-1s-1 and k-1 = 8.83 x 10(-4) s-1 at 20-degrees-C, respectively. The activation parameters have been evaluated and a mechanism consistent with the kinetic data is discussed.

引用

页码：384 / 388

页数：5

共 21 条

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