NO reaction over nanometer scale platinum clusters deposited on gamma-alumina: an XAS study

Authors
Schneider, S Bazin, D Garin, F Maire, G Capelle, M Meunier, G Noirot, R
Citation
S. Schneider et al., NO reaction over nanometer scale platinum clusters deposited on gamma-alumina: an XAS study, APP CATAL A, 189(1), 1999, pp. 139-145
Citations number
34
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
APPLIED CATALYSIS A-GENERAL
ISSN journal
0926860X → ACNP
Volume
189
Issue
1
Year of publication
1999
Pages
139 - 145
Database
ISI
SICI code
0926-860X(19991122)189:1<139:NRONSP>2.0.ZU;2-P
Abstract
An in situ EXAFS study has been done on a pre-reduced and pre-oxidised 1.16 % Pt/gamma y-Al2O3 catalyst in order to determine the effect of 1% NO (bala nce N-2) versus temperature at atmospheric pressure on the platinum particl es. Changes were observed in the crystallite morphologies from 200 degrees C due to sintering processes on the pre-reduced catalyst. On the pre-oxidis ed one, the phenomenon is much less pronounced. This study specifies the re activity of platinum clusters deposited on gamma-alumina versus NO. (C) 199 9 Elsevier Science B.V. All rights reserved.