Preparation of new type of Sn-Pt/SiO2 catalysts for carbonyl activation

J. L. Margitfalvi, I. Borbáth, M. Hegedus, A. Tompos

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41 Citations (Scopus)

Abstract

The paper is aimed to demonstrate how the activity and selectivity of a Pt/SiO2 catalyst can be tailored by introduction of tin either to hydrogenate the aldehyde group in α,β-unsaturated aldehydes (UA) or oxidize carbon monoxide at room temperature. In this paper general aspects of catalyst design based on the use of tin tetraalkyls are described in detail. Results summarized in this work show that upon using new approaches for anchoring tin into platinum high Snanch/Pts can be achieved. The experimental evidences indicate also that the hydrogenation of the aldehyde group in α,β-unsaturated aldehydes and oxidation of CO requires in situ formed "Sn4+-Pt ensemble" sites to activate either the carbonyl group or the CO molecule.

Original languageEnglish
Pages (from-to)35-49
Number of pages15
JournalApplied Catalysis A: General
Volume229
Issue number1-2
DOIs
Publication statusPublished - Apr 10 2002

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Keywords

  • "Sn-Pt ensemble" sites
  • Catalyst modification
  • Hydrogenation of cinnamaldehyde
  • Hydrogenation of crotonaldehyde
  • Hydrogenation of methyl vinyl ketone
  • Room temperature oxidation of carbon monoxide
  • Sn-Pt/SiO catalysts
  • Tin tetraalkyls

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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