ACIDITY OF MONTMORILLONITE PILLARED BY ALUMINA, ZIRCONIA AND CHROMIA

Authors
KRAJCOVIC J HUDEC P SMIESKOVA A ZIDEK Z KUBRANOVA M HORVATH I
Citation
J. Krajcovic et al., ACIDITY OF MONTMORILLONITE PILLARED BY ALUMINA, ZIRCONIA AND CHROMIA, Reaction kinetics and catalysis letters, 62(1), 1997, pp. 33-38
Citations number
13
Categorie Soggetti
Chemistry Physical
Journal title
Reaction kinetics and catalysis letters → ACNP
ISSN journal
01331736
Volume
62
Issue
1
Year of publication
1997
Pages
33 - 38
Database
ISI
SICI code
0133-1736(1997)62:1<33:AOMPBA>2.0.ZU;2-A
Abstract
Acidic properties of Al-, Zr- and Cr- pillared montmorillonites prepar ed from Jelsovy Potok bentonite (Central Slovakia) have been investiga ted 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 fewe r acid sites, nevertheless, they seem to be stronger compared to Al-an d Zr- pillared montmorillonites.