Catalysis Letters

, Volume 21, Issue 3–4, pp 309–320 | Cite as

Pt-Sn/Al2O3 sol-gel catalysts: Metallic phase characterization

  • R. Gomez
  • V. Bertin
  • P. Bosch
  • T. Lopez
  • P. Del Angel
  • I. Schifter
Article

Abstract

Highly dispersed platinum was found in Pt-Sn/Al2O3 catalysts prepared by the sol-gel method, i.e., cogelation of aluminum tri-sec-butoxide and tetrabutyltin and subsequent impregnation with hexachloroplatinic acid. X-ray diffraction studies showed that the cell parameter of pure platinum is not modified in bimetallic Pt-Sn samples. Moreover, energy dispersive X-ray analysis studies (EDX) showed that platinum, but not tin, was detected in the catalysts where tin was incorporated by the sol-gel coprecipitation of tin and aluminum. Incorporation of tin into the alumina network is suggested.

Keywords

Sol-gel catalysts platinum-tin catalysts platinum dispersion X-ray diffraction energy dispersive X-ray analysis EDX analysis 

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Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • R. Gomez
    • 1
  • V. Bertin
    • 1
  • P. Bosch
    • 1
  • T. Lopez
    • 1
  • P. Del Angel
    • 2
  • I. Schifter
    • 2
  1. 1.Department of ChemistryUniversidad Autonoma Metropolitana-IMexicoDF, Mexico
  2. 2.Instituto Mexicano del Petroleo-IBPMexicoDF, Mexico

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