Selective oxidation of glucose versus CO oxidation over supported gold catalysts

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Abstract

Two series of gold catalysts supported on TiO2, SiO2, and CeO2 have been prepared by colloidal gold deposition with 2 wt% of nominal gold loading. The diameter of gold particle stabilized by polyvinylalcohol (PVA) or by tannic acid-citrate was 2-3 nm and 6-7 nm, which increased to 5-7 nm and 7-13 nm, respectively, after calcination in air. Catalytic activities were investigated and compared in CO oxidation and glucose oxidation reactions. Inverse correlation was found between the activities in glucose oxidation and CO oxidation suggesting that the mechanisms are different. Besides the high dispersion the nature of the support seems to play a significant role in the liquid phase reaction.

Original languageEnglish
Pages (from-to)31-36
Number of pages6
JournalApplied Catalysis A: General
Volume388
Issue number1-2
DOIs
Publication statusPublished - Nov 20 2010

Keywords

  • CO oxidation
  • Glucose oxidation
  • Gold catalysts

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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