ACIDITY OF THE EXTERNAL SURFACE OF MODIFIED PENTASIL CATALYSTS AND ITS RESISTANCE TO MECHANICAL TREATMENT

Authors
PARENAGO OO LEBEDEVA OE IVANOVA II LUNINA EV
Citation
Oo. Parenago et al., ACIDITY OF THE EXTERNAL SURFACE OF MODIFIED PENTASIL CATALYSTS AND ITS RESISTANCE TO MECHANICAL TREATMENT, Pure and applied chemistry, 65(10), 1993, pp. 2205-2208
Citations number
8
Categorie Soggetti
Chemistry
Journal title
Pure and applied chemistry → ACNP
ISSN journal
00334545
Volume
65
Issue
10
Year of publication
1993
Pages
2205 - 2208
Database
ISI
SICI code
0033-4545(1993)65:10<2205:AOTESO>2.0.ZU;2-E
Abstract
The influence of mechanical treatment on acidic and cata lytical prope rties of the external surface ZSM type zeolites by paramagnetic probe method was investigated. The zeolite external surafce was modified by covering with silica, orthophosphoric acid treatment and exchange of z eolite acidic protons to lithium ions. It was shown, that due to mecha nical treatment the achieved changes in surface properties were destru cted and the external surface was renovated.