Enhanced activity and stability of gold/ceria-titania for the low-temperature water-gas shift reaction

James H. Carter, Parag M. Shah, Ewa Nowicka, Simon J. Freakley, David J. Morgan, Stan Golunski, Graham J. Hutchings

Research output: Contribution to journalArticle

Abstract

Gold supported on ceria-zirconia is one of the most active low temperature water-gas shift catalysts reported to date but rapid deactivation occurs under reaction conditions. In this study, ceria-titania was evaluated as an alternative catalyst support. Materials of different Ce:Ti compositions were synthesized using a sol-gel methodology and gold was supported onto these using a deposition-precipitation method. They were then investigated as catalysts for the low-temperature water-gas shift reaction. Au/Ce0.2Ti0.8O2 exhibited superior activity and stability to a highly active, previously reported gold catalyst supported on ceria-zirconia. High activity and stability was found to be related to the support comprising a high number of oxygen defect sites and a high specific surface area. These properties were conducive to forming a highly active catalyst with well-dispersed Au species.

Original languageEnglish
Article number443
Number of pages5
JournalFrontiers in Chemistry
Volume7
Issue numberJUN
DOIs
Publication statusPublished - 14 Jun 2019

Keywords

  • Ceria-titania
  • Ceria-zirconia
  • Gold
  • Heterogeneous catalysis
  • Nanoparticles
  • Water-gas shift

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Enhanced activity and stability of gold/ceria-titania for the low-temperature water-gas shift reaction. / Carter, James H.; Shah, Parag M.; Nowicka, Ewa; Freakley, Simon J.; Morgan, David J.; Golunski, Stan; Hutchings, Graham J.

In: Frontiers in Chemistry, Vol. 7, No. JUN, 443, 14.06.2019.

Research output: Contribution to journalArticle

Carter, James H. ; Shah, Parag M. ; Nowicka, Ewa ; Freakley, Simon J. ; Morgan, David J. ; Golunski, Stan ; Hutchings, Graham J. / Enhanced activity and stability of gold/ceria-titania for the low-temperature water-gas shift reaction. In: Frontiers in Chemistry. 2019 ; Vol. 7, No. JUN.
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AU - Morgan, David J.

AU - Golunski, Stan

AU - Hutchings, Graham J.

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