Investigation of the oxygen storage process on ceria- and ceria–zirconia-supported catalysts |
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| Authors: | Sumeya Bedrane Claude Descorme and Daniel Duprez |
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| Affiliation: | Laboratoire de Catalyse en Chimie Organique (LACCO), UMR CNRS 6503, Poitiers University, 40, Avenue du Recteur Pineau, 86022 Poitiers Cedex, France |
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| Abstract: | A total of 10 noble metal (Rh, Pt, Pd, Ru and Ir) catalysts, either supported on CeO2 or Ce0.63Zr0.37O2, were prepared. Catalysts were fully characterized using XRD, N2 adsorption at ?196 °C, TEM and H2 chemisorption. Oxygen storage processes were carefully investigated. The influence of temperature was checked and a key role of oxygen diffusion was further demonstrated. A review of the reactions involved in the CO transient oxidation reaction is finally proposed. |
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| Keywords: | Ceria–zirconia Oxygen storage capacity Oxygen diffusion Rh Pt Pd Ru Ir |
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