Investigation of the effect of the preparation method on the activity and stability of Au/CeZrO4 catalysts for the low temperature water gas shift reaction

R. Pilasombat, Helen Daly, Alexandre Goguet, John Breen, Robbie Burch, Christopher Hardacre, D. Thompsett

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The impact of the preparation method on the activity and stability of gold supported on ceria-zirconia low temperature water-gas shift (WGS) catalysts have been investigated. The influence of the gold deposition method, nature of the gold precursor, nature of the washing solution, drying method, Ce: Zr ratio of the support and sulfation of the support have been evaluated. The highest activity catalysts were obtained using a support with a Ce: Zr mole ratio 1: 1, HAuCl4 as the gold precursor deposited via deposition precipitation using sodium carbonate as the precipitation agent and the catalyst washed with water or 0.1 M NH4OH solution. In addition, the drying used was found to be critical with drying under vacuum at room temperature found to be most effective.
Original languageEnglish
Pages (from-to)131-138
Number of pages8
JournalCatalysis Today
Volume180
Issue number1
DOIs
Publication statusPublished - 17 Jan 2012

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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