Surface structure and redox chemistry of ceria-containing automotive catalytic systems

Surface structure and redox chemistry of ceria-containing automotive catalytic systems A summary is given of recent work done at the authors' laboratory, using several spectroscopies, molecular modeling and catalytic activity tests, to study the surface reactivity of ceriacontaining high surface area solids useful for automotive exhaust depollution catalysis. Issues addressed include the influence of the basicity of the cerium ion ligand environment on its ability for activation of O2 at the material surface, and its modification by supporting on alumina or doping with Cl− or other anions; the tendency to grouping of oxygen vacancies at the CeO2 (111) surface; the higher ease for formation of surface reduced centers in mixed (Zr,Ce) oxides; and the effect of electronic transfer and other chemical interactions induced by ceria on the redox reactivity of transition metalcontaining catalysts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Surface structure and redox chemistry of ceria-containing automotive catalytic systems

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Publisher
Springer Journals
Copyright
Copyright © 2000 by Springer
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/156856700X00138
Publisher site
See Article on Publisher Site

Abstract

A summary is given of recent work done at the authors' laboratory, using several spectroscopies, molecular modeling and catalytic activity tests, to study the surface reactivity of ceriacontaining high surface area solids useful for automotive exhaust depollution catalysis. Issues addressed include the influence of the basicity of the cerium ion ligand environment on its ability for activation of O2 at the material surface, and its modification by supporting on alumina or doping with Cl− or other anions; the tendency to grouping of oxygen vacancies at the CeO2 (111) surface; the higher ease for formation of surface reduced centers in mixed (Zr,Ce) oxides; and the effect of electronic transfer and other chemical interactions induced by ceria on the redox reactivity of transition metalcontaining catalysts.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jul 7, 2009

References

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