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Mesoporous Au/TiO2 Catalysts for Low Temperature CO Oxidation |
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| Authors: | Y. Denkwitz J. Geserick U. Hörmann V. Plzak U. Kaiser N. Hüsing R. J. Behm |
| Affiliation: | (1) Institute of Surface Chemistry and Catalysis, Ulm University, 89069 Ulm, Germany;(2) Institute of Inorganic Chemistry I, Ulm University, 89069 Ulm, Germany;(3) Central Facility of Electron Microscopy, Ulm University, 89069 Ulm, Germany;(4) Centre of Solar Energy and Hydrogen Research, Helmholtzstr. 8, 89081 Ulm, Germany |
| Abstract: | The activity and stability of structurally well defined mesoporous Au/TiO2 catalysts with different support morphologies and pore sizes for low temperature CO oxidation was investigated by kinetic measurements and in-situ IR spectroscopy. The resulting catalysts with Au particle sizes of ∼3 nm exhibit a high activity for CO oxidation, similar to or exceeding that of highly active standard Au/TiO2 catalysts with similar size Au nanoparticles and loading, and a significantly lower tendency for deactivation. Possible reasons for the improved performance of these catalysts are discussed. |
| Keywords: | Mesoporous catalysts Activity Deactivation Au/TiO2 CO oxidation |
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