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Combustion of methane over supported palladium-copper bimetallic catalysts

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Abstract

Monometallic and bimetallic catalysts based on palladium and copper deposited on a spinel carrier have been investigated in the catalytic combustion of methane. Great differences were found in catalytic activity, according to the sequence Pd/MgAl2O4>CuO−Pd/MgAl2O4>Pd−CuO/MgAl2O4>CuO/MgAl2O4. They were explained by changes in surface composition of the catalysts. In the case of bimetallic catalysts the metallic surface is preferentially enriched in copper, which acts as a diluting agent for the Pd atom ensembles. As a consequence, the adsorption of reactants is limited and the catalysts so obtained behave like copper slightly doped with palladium.

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Authors and Affiliations

  1. Laboratoire d'Application de la Chimie á l'Environnement, UMR CNRS 5634, Université Claude Bernard Lyon I, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne Cedex, France

    Bernard Béguin, Edouard Garbowski & Michel Primet

  2. Catalysis section, Osaka National Research Institute-AIST, MITI, 1-8-31 Midorigaoka, 563, Ikeda-shi, Osaka, Japan

    Stefan Dietrich Peter

Authors
  1. Bernard Béguin
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  2. Edouard Garbowski
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  3. Stefan Dietrich Peter
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  4. Michel Primet
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Béguin, B., Garbowski, E., Peter, S.D. et al. Combustion of methane over supported palladium-copper bimetallic catalysts. React Kinet Catal Lett 59, 253–262 (1996). https://doi.org/10.1007/BF02068121

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  • DOI: https://doi.org/10.1007/BF02068121

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