Sorption of lanthanum ions by natural clinoptilolite tuff

被引：2

作者：

Dampilova, B. V. ^{[1
]}

Zonkhoeva, E. L. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Geol, Siberian Branch, Ulan Ude 670047, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2013年 / 87卷 / 08期

关键词：

lanthanum ions; kinetics; sorption on clinoptilolite tuff; diffusion;

D O I：

10.1134/S0036024413080098

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The equilibrium and kinetics of sorption of lanthanum ions on natural clinoptilolite tuff are studied. It is demonstrated that sorption of lanthanum ions from diluted solutions occurs in micropores of clinoptilolite, and from concentrated solutions in the mesoporous structure of tuff. The main capacity of zeolite tuff is found in the secondary porous structure. The sorption of lanthanum ions is limited by diffusion in tuff grains. Lanthanum ions are regularly distributed in the tuff phase and interact with the Bronsted centers of large clinoptilolite cavities.

引用

页码：1353 / 1356

页数：4

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