Acidity of montmorillonite pillared by alumina, zirconia and chromia

被引：1

作者：

Krajcovic, J ^{[1
]}

Hudec, P ^{[1
]}

Smieskova, A ^{[1
]}

Zidek, Z ^{[1
]}

Kubranova, M ^{[1
]}

Horvath, I ^{[1
]}

机构：

[1] SLOVAK UNIV TECHNOL BRATISLAVA, FAC CHEM TECHNOL, DEPT PETR, BRATISLAVA 81237, SLOVAKIA

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1997年 / 62卷 / 01期

关键词：

montmorillonite (pillared); acidity; intercalation; temperature-programmed desorption;

D O I：

10.1007/BF02475710

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：

Acidic properties of Al-, Zr- and Cr- pillared montmorillonites prepared from Jelsovy 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.

引用

页码：33 / 38

页数：6

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