THERMAL-STABILITY OF THE FRAMEWORK, HYDROXYL-GROUPS, AND CATALYTICALLY ACTIVE-SITES OF MORDENITES

Authors
MISHIN IV BRUEVA TR KAPUSTIN GI NISSENBAUM VD BEYER HK
Citation
Iv. Mishin et al., THERMAL-STABILITY OF THE FRAMEWORK, HYDROXYL-GROUPS, AND CATALYTICALLY ACTIVE-SITES OF MORDENITES, Kinetics and catalysis, 38(3), 1997, pp. 384-390
Citations number
16
Categorie Soggetti
Chemistry Physical
Journal title
Kinetics and catalysis → ACNP
ISSN journal
00231584
Volume
38
Issue
3
Year of publication
1997
Pages
384 - 390
Database
ISI
SICI code
0023-1584(1997)38:3<384:TOTFHA>2.0.ZU;2-K
Abstract
The crystallinity, framework composition, state of aluminum, and conce ntration of hydroxyl groups in hydrogen forms of mordenites calcined a t 500-900 degrees C are studied. The temperature ranges of amorphizati on, thermal dealumination, and dehydroxylation are determined. Rearran gement of the structure is shown to result in significant changes in t he surface chemistry of zeolites. The thermal dealumination allows one to produce strong acid sites that are active in the transformation of ethylbenzene.