CHANGES IN THE OXIDATION-STATE OF TRANSITION-METAL CONTAINING MCM-41 DURING DENO(X) REACTIONS

Authors
JENTYS A SCHIESSER W VINEK H
Citation
A. Jentys et al., CHANGES IN THE OXIDATION-STATE OF TRANSITION-METAL CONTAINING MCM-41 DURING DENO(X) REACTIONS, Catalysis letters, 47(3-4), 1997, pp. 193-198
Citations number
23
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
47
Issue
3-4
Year of publication
1997
Pages
193 - 198
Database
ISI
SICI code
1011-372X(1997)47:3-4<193:CITOOT>2.0.ZU;2-M
Abstract
The oxidation state of Co, Pt and Rh containing MCM-41 after co-adsorp tion of NO, CH4, and O-2 in the presence of water vapor was studied by in situ XANES experiments. All catalysts were oxidized after the adso rption of NO and reduced after the coadsorption of NO and CH4. The pre sence of water vapor did not influence the oxidation/reduction of Rh/M CM-41 and Pt/MCM-41,while Co/MCM-41 was oxidized by the presence of H2 O at reaction temperature.