DEACTIVATION MECHANISM OF PHOTOREDUCED AND CYCLOPROPANE-TREATED MOLYBDENA SILICA CATALYSTS FOR OLEFIN METATHESIS

Authors
VIKULOV KA SHELIMOV BN KAZANSKY VB MOL JC
Citation
Ka. Vikulov et al., DEACTIVATION MECHANISM OF PHOTOREDUCED AND CYCLOPROPANE-TREATED MOLYBDENA SILICA CATALYSTS FOR OLEFIN METATHESIS, Journal of molecular catalysis, 90(1-2), 1994, pp. 61-67
Citations number
6
Categorie Soggetti
Chemistry Physical
Journal title
Journal of molecular catalysis → ACNP
ISSN journal
03045102
Volume
90
Issue
1-2
Year of publication
1994
Pages
61 - 67
Database
ISI
SICI code
0304-5102(1994)90:1-2<61:DMOPAC>2.0.ZU;2-Z
Abstract
Photoreduction of MoO3/SiO2 catalysts in CO followed by chemisorption of cyclopropane results in highly active catalysts for the metathesis of alkenes. These catalysts gradually lose their activity due to an in trinsic deactivation mechanism. Experimental results have shown that t he deactivation is due to the isomerization of the Mo-cyclobutane inte rmediate into pi-complexes of the alkenes with the Mo4+ ions.