Redox-catalytic correlations in oxidised copper-ceria CO-PROX catalysts

A. Martínez-Arias, D. Gamarra, M. Fernández-García, A. Hornés, P. Bera, Zs Koppány, Z. Schay

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102 Citations (Scopus)

Abstract

Four nanostructured oxidised copper-cerium catalysts prepared by two different methods (impregnation of ceria and coprecipitation of the two components within reverse microemulsions) with varying copper loadings have been examined with the aim of establishing correlations between redox and catalytic properties for preferential oxidation of CO in H2-rich streams. The analysis is based on ex situ TPR examination both with H2 or CO as well as operando spectroscopic exploration by DRIFTS and XANES, additionally complemented by conventional catalytic tests. The results reveal redox promoting effects on copper oxide reduction and allow establishing a model of the catalytic behaviour of this type of catalysts which can provide keys to control their CO-PROX catalytic properties.

Original languageEnglish
Pages (from-to)211-217
Number of pages7
JournalCatalysis Today
Volume143
Issue number3-4
DOIs
Publication statusPublished - May 30 2009

Keywords

  • CO-PROX
  • CO-TPR
  • CuO-CeO catalysts
  • H-TPR
  • Operando-DRIFTS
  • Operando-XANES

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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    Martínez-Arias, A., Gamarra, D., Fernández-García, M., Hornés, A., Bera, P., Koppány, Z., & Schay, Z. (2009). Redox-catalytic correlations in oxidised copper-ceria CO-PROX catalysts. Catalysis Today, 143(3-4), 211-217. https://doi.org/10.1016/j.cattod.2008.09.018