Acid-base properties of bentonite rocks with different origins

被引：10
|
作者：
Nagy, NM [1 ]
Kónya, J [1 ]
机构：
[1] Debrecen Univ, Isotope Lab, H-4010 Debrecen, Hungary
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2006年 / 295卷 / 01期
关键词：
acid-base properties; bentonite; montmorillonite; surface complexation;
D O I：
10.1016/j.jcis.2005.07.065
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：
Five bentonite samples (35-47% montmorillonite) from a Sarmatian sediment series with bentonite sites around Sajobabony (Hungary) is studied. Some of these samples were tuffogenic bentonite (sedimentary), the others were bentonitized tuff with volcano sedimentary origin. The acid-base properties of the edge sites were studied by potentiometric titrations and surface complexation modeling. It was found that the number and the ratio of silanol and aluminol sites as well as the intrinsic stability constants are different for the sedimentary bentonite and bentonitized tuff. The characteristic properties of the edges sites depend on the origins. The acid-base properties are compared to other commercial and standard bentonites. (c) 2005 Published by Elsevier Inc.
引用
收藏
页码：173 / 180
页数：8
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