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Mesoporous Au/TiO2 Catalysts for Low Temperature CO Oxidation

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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.

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Acknowledgments

This work was supported by the Deutsche Forschungsgemeinschaft within the Priority Programme (SPP) 1181 ‘Nanomat’ (Be 1201/13-1, Hu 1427 1/1 and Ka-1295/5-1).

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Authors and Affiliations

  1. Institute of Surface Chemistry and Catalysis, Ulm University, 89069, Ulm, Germany

    Y. Denkwitz & R. J. Behm

  2. Institute of Inorganic Chemistry I, Ulm University, 89069, Ulm, Germany

    J. Geserick & N. Hüsing

  3. Central Facility of Electron Microscopy, Ulm University, 89069, Ulm, Germany

    U. Hörmann & U. Kaiser

  4. Centre of Solar Energy and Hydrogen Research, Helmholtzstr. 8, 89081, Ulm, Germany

    V. Plzak

Authors
  1. Y. Denkwitz
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  2. J. Geserick
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  3. U. Hörmann
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  4. V. Plzak
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  5. U. Kaiser
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  6. N. Hüsing
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  7. R. J. Behm
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Correspondence to R. J. Behm.

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Denkwitz, Y., Geserick, J., Hörmann, U. et al. Mesoporous Au/TiO2 Catalysts for Low Temperature CO Oxidation. Catal Lett 119, 199–208 (2007). https://doi.org/10.1007/s10562-007-9229-z

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  • DOI: https://doi.org/10.1007/s10562-007-9229-z

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