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Characterization of Sn doped Ni/Al2O3 steam reforming catalysts by XPS

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Abstract

XPS measurements have shown that tin oxides are more readily reduced to metallic tin by hydrogen in Ni/Al2O3 systems than on pure Al2O3. During the reductive activation of Sn doped Ni/Al2O3 catalysts, surface segregation of the dopant was observed. This finding may explain that tin enhances the selectivity of the steam reforming catalysts only when added in very low concentrations and that it acts as a poison at higher loadings.

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Authors and Affiliations

  1. School of Chemical Engineering and Industrial Chemistry, University of New South Wales, PO Box 1, 2033, Kensington, NSW, Australia

    Celestino Padeste & David L. Trimm

  2. School of Chemistry, University of New South Wales, PO Box 1, 2033, Kensington, NSW, Australia

    Robert N. Lamb

Authors
  1. Celestino Padeste
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  2. David L. Trimm
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  3. Robert N. Lamb
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Padeste, C., Trimm, D.L. & Lamb, R.N. Characterization of Sn doped Ni/Al2O3 steam reforming catalysts by XPS. Catal Lett 17, 333–339 (1993). https://doi.org/10.1007/BF00766156

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  • DOI: https://doi.org/10.1007/BF00766156

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