Influence of CeO2 addition on the physicochemical and catalytic properties of Pd/TiO2 catalysts in CO oxidation |
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| Authors: | A. A. Shutilov G. A. Zenkovets I. Yu. Pakharukov I. P. Prosvirin |
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| Affiliation: | 1. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
2. Novosibirsk State University, Novosibirsk, 630090, Russia
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| Abstract: | The influence of CeO2 addition on the formation of the microstructure, electronic state, and catalytic properties of Pd/TiO2 supported catalysts in CO oxidation were investigated. It was shown that, when Pd is supported on titanium dioxide modified with cerium dioxide, annealing at 500°C results in the formation of Pd/(CeO2-TiO2) catalysts with a nanocrystalline structure composed of incoherently intergrown fine anatase crystals and interblock boundaries in which palladium and cerium are stabilized. The higher catalytic activity of Pd/(CeO2-TiO2) catalysts compared to Pd/TiO2 catalysts is explained by the smaller size of Pd particles and the higher proportion of palladium in the Pdδ+ state. |
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