Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts

Min Kang, Min Woo Song, Chang Ha Lee

Research output: Contribution to journalArticle

261 Citations (Scopus)

Abstract

CoOx/CeO2 composite catalysts of different cobalt/ceria ratios have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and oxygen. The small activity decay observed for them is due to carbon dioxide retention. The CoOx/CeO 2 composite catalyst showed good resistance to water vapor poisoning. The catalysts were investigated by X-ray diffraction (XRD), temperature-programmed reduction (TPR), CO-TPD and XPS. The CoO x/CeO2 composite catalysts exhibit high catalytic activity in carbon monoxide oxidation, showing markedly enhanced catalytic activities due to the combined effect of cobalt oxide and ceria. Combining the results of XRD, TPR and XPS, we propose that the finely dispersed and higher valence state CoOx species mainly contribute to the catalytic activity.

Original languageEnglish
Pages (from-to)143-156
Number of pages14
JournalApplied Catalysis A: General
Volume251
Issue number1
DOIs
Publication statusPublished - 2003 Sep 25

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

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