Ferric oxide-supported Pt subnano clusters for preferential oxidation of CO in H2-rich gas at room temperature

Botao Qiao, Aiqin Wang, Lin Li, Qingquan Lin, Haisheng Wei, Jingyue Liu, Tao Zhang

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

Pt single atoms and small clusters were dispersed on iron oxides by a facile coprecipitation method. These catalysts, with or without calcination at elevated temperatures, show excellent activity and selectivity for preferential oxidation of CO in the H2-rich gas. They can completely remove CO from H2-rich gas at a wide temperature range of 20-70 °C, which renders them suitable for low-temperature applications. The reaction followed a mixture of competitive mechanism and a noncompetitive/redox mechanism. The weakened CO adsorption on small Pt clusters and atoms makes the competitive adsorption of O2 feasible, which ensures a high activity of Pt/Fe catalysts, even calcined at elevated temperature.

Original languageEnglish (US)
Pages (from-to)2113-2117
Number of pages5
JournalACS Catalysis
Volume4
Issue number7
DOIs
StatePublished - Jul 3 2014

Keywords

  • CO
  • Pt
  • cluster
  • iron oxide
  • preferential oxidation

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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