NATURE OF ACTIVE-SITES IN CATALYTIC AMMOXIMATION OF CYCLOHEXANONE TO THE CORRESPONDING OXIME ON AMORPHOUS SILICA - EPR INVESTIGATIONS

Authors
PINELLI D TRIFIRO F VACCARI A GIAMELLO E PEDULLI G
Citation
D. Pinelli et al., NATURE OF ACTIVE-SITES IN CATALYTIC AMMOXIMATION OF CYCLOHEXANONE TO THE CORRESPONDING OXIME ON AMORPHOUS SILICA - EPR INVESTIGATIONS, Catalysis letters, 13(1-2), 1992, pp. 21-26
Citations number
17
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
13
Issue
1-2
Year of publication
1992
Pages
21 - 26
Database
ISI
SICI code
1011-372X(1992)13:1-2<21:NOAICA>2.0.ZU;2-Y
Abstract
Superoxide radical ions were observed at the surface of an amorphous s ilica active in the catalytic ammoximation of cyclohexanone with molec ular oxygen. They were generated by the contact of oxygen with a therm ally activated sample. The presence of organic radicals on the spent c atalyst, which probably played a role in the catalytic process, was al so observed.