Catalytic performance of K-promoted Rh/USY catalysts in preferential oxidation of CO in rich hydrogen

Hisanori Tanaka, Shin Ichi Ito, Satoshi Kameoka, Keiichi Tomishige, Kimio Kunimori

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

K-promoted Rh/USY (molar ratio: K/Rh=3) catalyst was found to exhibit high performance in preferential oxidation of CO in rich hydrogen. Such high performance was maintained in the presence of steam and CO2. The CO oxidation activity of the K-Rh/USY catalyst was independent of the partial pressure of H2, while the activity of the unpromoted Rh/USY catalyst was decreased significantly in hydrogen-rich stream. The effect of potassium addition on the catalyst structure was investigated and is discussed in terms of the differences in the catalytic performance.

Original languageEnglish
Pages (from-to)255-263
Number of pages9
JournalApplied Catalysis A: General
Volume250
Issue number2
DOIs
Publication statusPublished - 2003 Sep 15
Externally publishedYes

Keywords

  • CO oxidation
  • Potassium promoted
  • Preferential oxidation
  • Rh/USY
  • Rich hydrogen
  • Selective oxidation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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