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Reaction Kinetics and Catalysis Letters

, Volume 60, Issue 1, pp 9–13 | Cite as

Pd-SiO2 catalysts. stability of β-PdHx as a function of Pd dispersion

  • F. Pinna
  • M. Signoretto
  • G. Strukul
  • S. Polizzi
  • N. Pernicone
Article

Abstract

Measurements of β-PdHx stoichiometry by hydrogen TPD and of Pd dispersion by CO chemisorption has shown that in Pd−SiO2 catalysts the formation of β-PdHx is more and more hindered with the increase of Pd dispersion in the whole dispersion range. A linear relationship exists between β-PdHx stoichiometry and temperature of its hydrogen TPD peak.

Keywords

Pd catalysts β-hydride TPR 

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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • F. Pinna
    • 1
  • M. Signoretto
    • 1
  • G. Strukul
    • 1
  • S. Polizzi
    • 2
  • N. Pernicone
    • 3
  1. 1.Dipartimento di ChimicaUniversità di Venezia, CalleVeneziaItaly
  2. 2.Dipartimento Chimica FisicaUniversità di Venezia, CalleVeneziaItaly
  3. 3.NovaraItaly

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