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Supported platinum-tin catalysts: The identification by tin-119 Mössbauer spectroscopy of the unusual oxidation of tin during pretreatment under reducing conditions

  • Surface Phenomena, Catalysis and Corrosion
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Abstract

Titania-supported platinum-tin hydrocarbon dehydrogenation catalysts formed by initial treatment in air contain Sn4+ which is reduced by low temperature treatment in hydrogen to Sn2+. Subsequent exposure to the reducing atmosphere at moderate temperatures results in the reoxidation of some of the Sn2+ species. Continued treatment at elevated temperatures gives rise to the formation of a platinum-tin alloy. The unusual behaviour of titania-supported platinum-tin described in this work resembles results previously recorded from other titania-supported bimetallic catalysts containing iron and Group VIII precious metals.

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Authors and Affiliations

  1. School of Chemistry, University of Birmingham, P.O. Box 363, B15 2TT, Birmingham, UK

    Frank J. Berry & Tao Zhang

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  1. Frank J. Berry
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  2. Tao Zhang
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Berry, F.J., Zhang, T. Supported platinum-tin catalysts: The identification by tin-119 Mössbauer spectroscopy of the unusual oxidation of tin during pretreatment under reducing conditions. Hyperfine Interact 67, 543–547 (1991). https://doi.org/10.1007/BF02398198

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  • DOI: https://doi.org/10.1007/BF02398198

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