Pd oxidation under UHV in a model Pd/ceria-zirconia catalyst

Authors
Smirnov, MY Graham, GW
Citation
My. Smirnov et Gw. Graham, Pd oxidation under UHV in a model Pd/ceria-zirconia catalyst, CATAL LETT, 72(1-2), 2001, pp. 39-44
Citations number
9
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
CATALYSIS LETTERS
ISSN journal
1011372X → ACNP
Volume
72
Issue
1-2
Year of publication
2001
Pages
39 - 44
Database
ISI
SICI code
1011-372X(2001)72:1-2<39:POUUIA>2.0.ZU;2-R
Abstract
A model planar catalyst was prepared by depositing Pd onto a thick (few mum ) film of ceria-zirconia in ultrahigh vacuum (UHV), and the oxidation state of Pd and its support was determined by X-ray photoelectron spectroscopy, following thermal treatments in UHV, oxygen, or carbon monoxide. It was fou nd that Pd could be oxidized simply by heating the catalyst in UHV, indicat ing that transfer of oxygen from the support to the metal is both thermodyn amically favorable and facile.