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Effect of the addition of alkali metals on the metallic phase of Pt/Al2O3 catalysts

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Abstract

The effect of the addition of alkali metals to Pt/Al2O3 catalysts for dehydrogenation of paraffins was studied. Results can be interpreted in terms of different effects. Thus, the addition of alkali metals produces a poisoning of the acid sites of the alumina support and a modification of the characteristics of the metallic phase. The latter effect involves not only an increase of the Pt particles size, but also an electronic modification of the metallic phase. These two effects are more marked with alkali metals with higher ionic radius, such as K.

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Authors and Affiliations

  1. Institute de Imestigacion.es en Catálisis y Petroquímica-INCAPE, Argentina

    Sergio R. de Miguel, Alberto A. Castro & Osvaldo A. Scelza

  2. Facultad de Ingeniería Química, Universidad National del Literol-CONICET, Santiago del Estero 2654, 3000, Santa Fe, Argentina

    Sergio R. de Miguel, Alberto A. Castro & Osvaldo A. Scelza

  3. Instituto de Catálisis y Petróleoquímica, Campus Universidad Autónoma, 28049, Cantoblanco, Madrid, Spain

    Javier Soria

Authors
  1. Sergio R. de Miguel
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  2. Alberto A. Castro
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  3. Osvaldo A. Scelza
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  4. Javier Soria
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de Miguel, S.R., Castro, A.A., Scelza, O.A. et al. Effect of the addition of alkali metals on the metallic phase of Pt/Al2O3 catalysts. Catal Lett 32, 281–291 (1995). https://doi.org/10.1007/BF00813222

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  • DOI: https://doi.org/10.1007/BF00813222

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