Sorption of lanthanum ions by natural clinoptilolite tuff

被引：0
|
作者：
B. V. Dampilova
E. L. Zonkhoeva
机构：
[1] Russian Academy of Sciences,Geological Institute, Siberian Branch
来源：
Russian Journal of Physical Chemistry A | 2013年 / 87卷
关键词：
lanthanum ions; kinetics; sorption on clinoptilolite tuff; diffusion;
D O I：
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学科分类号：
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 Brønsted centers of large clinoptilolite cavities.
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页码：1353 / 1356
页数：3
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