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Measurements of Oxygen Species Available in PtRh/CeO2–Al2O3 Type Industrial Catalysts and Relationship with Their Three-Way Catalytic Activity

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Abstract

Measurements of the oxygen storage capacity (OSC) were performed on several aged PtRh/CeO2–Al2O3 industrial catalysts, using different techniques, i.e., TPR experiments, O2 and H2/O2 chemisorption. The obtained OSC values were compared to the catalytic activity measured at 723 K in the simultaneous elimination of CO, C3 hydrocarbons and NO. The best correlation was found for the OSC measured by O2 chemisorption at 298 K on the solids previously reduced at 573 K and which represents the most reactive oxygen atoms of the catalyst surface.

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Authors and Affiliations

  1. Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, CNRS/Université Claude Bernard Lyon 1, 43 boulevard du 11 Novembre 1918, 69622, Villeurbanne Cedex, France

    S. Salasc, V. Perrichon & M. Primet

  2. Technocentre Renault, 1 rue du Golf, 78288, Guyancourt Cedex, France

    M. Chevrier

  3. Centre Technique Renault, 1 allée Cornuel, 91510, Lardy, France

    N. Mouaddib-Moral

Authors
  1. S. Salasc
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  2. V. Perrichon
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  3. M. Primet
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  4. M. Chevrier
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  5. N. Mouaddib-Moral
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Salasc, S., Perrichon, V., Primet, M. et al. Measurements of Oxygen Species Available in PtRh/CeO2–Al2O3 Type Industrial Catalysts and Relationship with Their Three-Way Catalytic Activity. Topics in Catalysis 16, 71–75 (2001). https://doi.org/10.1023/A:1016678730268

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