Hyperfine Interactions

, Volume 84, Issue 1, pp 563–567 | Cite as

A study of platinum-supported catalysts through hyperfine interactions

  • H. Saitovitch
  • P. R. J. Silva
  • A. M. Rodriguez
  • J. Weberszpil
  • F. B. Passos
  • M. Schmal
Article

Abstract

The effect of indium addition on alumina-supported platinum catalysts was investigated by measurements of hyperfine interactions. Via lime differential perturbed angular correlation spectroscopy (TDPAC) on111Cd, Pt/Al2O3 catalysts were studied in the flow of a heptane/H2 gas stream. The results indicate that some amount of indium sticks to platinum which is then dispersed on the support surface. The amount of In that is free from platinum is mobile under reaction conditions, being capable of diluting platinum particles and draining off coke precursors from the platinum surface.

Keywords

Indium Thin Film Platinum Lime Hyperfine Interaction 

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Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • H. Saitovitch
    • 1
  • P. R. J. Silva
    • 1
  • A. M. Rodriguez
    • 1
  • J. Weberszpil
    • 1
  • F. B. Passos
    • 2
  • M. Schmal
    • 3
  1. 1.Centro Brasileiro de Pesquisas Fisicas (CBPF/CNPq)Rio de Janeiro, RJBrazil
  2. 2.Dept. Eng. QuímicaUniv. Fed. FluminenseNiterói, RJBrazil
  3. 3.COPPE/EQUniv. Fed. Rio de JaneiroRio de Janeiro, RJBrazil

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