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

Authors
MISHIN IV KALININ VP NISSENBAUM VD BEYER HK KARGE HG
Citation
Iv. Mishin et al., THE THERMAL-STABILITY OF THE FRAMEWORK, HYDROXYL-GROUPS, AND ACTIVE-SITES OF FAUJASITES, Kinetics and catalysis, 35(4), 1994, pp. 584-590
Citations number
17
Categorie Soggetti
Chemistry Physical
Journal title
Kinetics and catalysis → ACNP
ISSN journal
00231584
Volume
35
Issue
4
Year of publication
1994
Pages
584 - 590
Database
ISI
SICI code
0023-1584(1994)35:4<584:TTOTFH>2.0.ZU;2-W
Abstract
The effect of the framework composition on the crystallinity and ''den sity'' of hydroxyl groups and the concentration of active sites is rep orted for hydrogen forms of Y zeolites preheated at 400 - 1000-degrees -C. The increase in the Si/Al ratios results in improved resistance of the framework atoms and hydroxyl groups to high temperatures and in e nhanced thermal stability of the sites that are active in the cracking of isooctane and disproportion of ethylbenzene.