Redox processes in Sb-containing mixed oxides used in oxidation catalysis I. Tin dioxide assisted antimony oxidation in solid state

Authors
Caldararu, M Thomas, MF Bland, J Spranceana, D
Citation
M. Caldararu et al., Redox processes in Sb-containing mixed oxides used in oxidation catalysis I. Tin dioxide assisted antimony oxidation in solid state, APP CATAL A, 209(1-2), 2001, pp. 383-390
Citations number
32
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
APPLIED CATALYSIS A-GENERAL
ISSN journal
0926860X → ACNP
Volume
209
Issue
1-2
Year of publication
2001
Pages
383 - 390
Database
ISI
SICI code
0926-860X(20010228)209:1-2<383:RPISMO>2.0.ZU;2-3
Abstract
The stability of the oxidation state of antimony ion in Sn-Sb-O catalysts u nder the influence of operating conditions was investigated by Mossbauer sp ectroscopy. It was shown that the presence of the tin dioxide matrix facili tates the oxidation of the antimony ion; at the same time, the Sb5+ ions in the SnO2 rutile matrix show much higher stability under slightly reducing conditions provided by the catalytic test of propylene oxidation. (C) 2001 Elsevier Science B.V. All rights reserved.