Liquid phase selective oxidation of benzyl alcohol over Pd-Ag catalysts supported on pumice

L. F. Liotta, A. M. Venezia, G. Deganello, A. Longo, A. Martorana, Z. Schay, L. Guczi

Research output: Contribution to journalConference article

83 Citations (Scopus)

Abstract

Selective oxidation of benzyl alcohol to benzaldehyde was carried out over pumice supported bimetallic and monometallic Pd and Ag catalysts. Preliminary kinetic studies were performed at 333 K in autoclave, at pressure of 2 atm in pure oxygen. Under these conditions, small amounts of benzoic acid were detected with the monometallic Pd pumice being the most active catalyst. The reaction was also carried out under flowing oxygen at atmospheric pressure and at 348 K. Under these conditions, the selectivity to benzaldehyde was 100%. The catalytic activity of the catalysts was measured after different oxidation and reduction treatments at high temperature. In addition, two mechanical mixtures of pretreated Pd and Ag monometallic samples were tested. The structural data (XRD, XPS, EXAFS) along with the catalytic results would indicate that Ag0 and Pd0 species are the catalytic sites acting with certain synergism.

Original languageEnglish
Pages (from-to)271-276
Number of pages6
JournalCatalysis Today
Volume66
Issue number2-4
DOIs
Publication statusPublished - Mar 30 2001
EventCatalysis in Multiphase Reactors - Napoles, Italy
Duration: May 29 2000May 29 2000

Keywords

  • Benzyl alcohol oxidation
  • Pd-Ag/pumice catalyst
  • XPS study

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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