HYDROGEN SPILLOVER ON NI(S) AL2O3-ULTRASTABLE Y-ZEOLITE AND ITS EFFECT ON XYLENE ISOMERIZATION/

Authors
YANG MG NAKAMURA I FUJIMOTO K
Citation
Mg. Yang et al., HYDROGEN SPILLOVER ON NI(S) AL2O3-ULTRASTABLE Y-ZEOLITE AND ITS EFFECT ON XYLENE ISOMERIZATION/, Catalysis letters, 39(1-2), 1996, pp. 33-37
Citations number
22
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
39
Issue
1-2
Year of publication
1996
Pages
33 - 37
Database
ISI
SICI code
1011-372X(1996)39:1-2<33:HSONAY>2.0.ZU;2-B
Abstract
The catalytic activity of ultrastable Y zeolite (USY) for m-xylene iso merization in the presence of hydrogen is markedly promoted by physica lly mixing with Ni(S)/Al2O3 under the conditions of 603 K and 1.0 MPa. The study on H-D exchange of the OH groups on the USY zeolite surface showed that the exchange rate in Ni(S)/Al2O3-USY was five times highe r than that of USY alone. It was considered that active hydrogen speci es, formed on Ni(S) sites and spilled over to Al2O3 and then to USY, p romote the acid catalysis on the USY.