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CO oxidation over Au/CeO2-ZrO2 catalists: The effect of the support composition of the au-support interaction

  • VIII International Conference on Mechanisms of Catalytic Reactions
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Abstract

The effect of the support composition on the Au-support interactions and its role in the creation of the activity of Au/CeO2-ZrO2 catalysts in CO oxidation has been studied. The CeO2-ZrO2 oxides and Au/CeO2-ZrO2 catalysts were synthesized, characterized by BET, XRD, HRTEM, AAS, TPR-H2, and tested in CO oxidation. An approximate evaluation of the H2 consumption for the surface reduction of the studied samples was estimated applying the model developed by Johnson and Mooi, which is based on the qualitative relationship between the amount of the capping oxygen and BET surface area. The sequence of the increasing percentage of O2 atoms in the capping peak to the total Ce atoms follows the sequence of the decreasing Zr/Ce molar ratio in the sample. The activity of Au/CeO2-ZrO2 catalysts depends on the support composition and increases with the decrease in Zr/Ce molar ratio.

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Authors and Affiliations

  1. Technical University of Łódź, Łódź, Poland

    I. Dobrosz-Gómez & J. M. Rynkowski

  2. Universidad Nacional de Colombia, Manizales, Colombia

    I. Dobrosz-Gómez & M. Á. Gómez-García

Authors
  1. I. Dobrosz-Gómez
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  2. M. Á. Gómez-García
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  3. J. M. Rynkowski
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Correspondence to J. M. Rynkowski.

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Dobrosz-Gómez, I., Gómez-García, M.Á. & Rynkowski, J.M. CO oxidation over Au/CeO2-ZrO2 catalists: The effect of the support composition of the au-support interaction. Kinet Catal 51, 823–827 (2010). https://doi.org/10.1134/S0023158410060078

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  • DOI: https://doi.org/10.1134/S0023158410060078

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