The ion-exchange property of some layered inorganic materials with potassium ion, rubidium ion and cesium ion, and selective cesium ion-exchange of synthetic mica

被引：20

作者：

Suzuki, N ^{[1
]}

Yamamoto, D ^{[1
]}

Anaguchi, N ^{[1
]}

Tsuchiya, H ^{[1
]}

Aoki, K ^{[1
]}

Kanzaki, Y ^{[1
]}

机构：

[1] Showa Pharmaceut Univ, Analyt Chem Lab, Tokyo 1948543, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2000年 / 73卷 / 11期

关键词：

D O I：

10.1246/bcsj.73.2599

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ion-exchange property of sodium difluorotetrasilicate, Na-TSM, with potassium, rubidium and cesium ions was investigated in addition to two other typical layered inorganic materials. The selectivity sequence of Na-TSM was Cs+ > Rb+ > K+ and the selectivity difference of Na-TSM was highest among the examined layered materials. It was found from a chemical analysis that cesium ion-exchange participated in magnesium ions, which is a lattice component of Na-TSM, in addition to an ordinary ion-exchange reaction with the interlayer sodium ions. The exchange of cesium ions with magnesium ions was found to be stoichiometric, and was expected to be an ideal ion-exchange reaction. It was a peculiar phenomenon only on Na-TSM. Once cesium ions were exchanged in a Na-TSM lattice, they were hardly released, due to a reverse ion-exchange with sodium ions. The highest selectivity difference and tight binding of cesium ions were interpreted by an ion-exchange with lattice magnesium ion as well as decreased dehydration, which resulted in the interlayer gallery height.

引用

页码：2599 / 2603

页数：5

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