Acidity of montmorillonite pillared by alumina, zirconia and chromia

被引：0
|
作者：
Jozef Krajčovič
Pavol Hudec
Agáta Smiešková
Zdeno Židek
Mária Kubranová
Ivan Horváth
机构：
[1] Slovak Academy of Sciences,Institute of Inorganic Chemistry
[2] Slovak Technical University,Department of Petroleum, Faculty of Chemical Technology
来源：
Reaction Kinetics and Catalysis Letters | 1997年 / 62卷
关键词：
montmorillonite (pillared); acidity; intercalation; temperature-programmed desorption;
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摘要：
Acidic properties of Al-, Zr- and Cr- pillared montmorillonites prepared from Jelšový Potok bentonite (Central Slovakia) have been investigated using temperature-programmed desorption of ammonia. The number of acid sites varied with different interlayer cations from 0.06 to 0.23 mmol g−1. The character of acid sites was similar in the case of Al- and Zr- forms. It is obvious that the chromium analogue contains fewer acid sites, nevertheless, they seem to be stronger compared to Al- and Zr- pillared montmorillonites.
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页码：33 / 38
页数：5
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