Selective CO oxidation in H2-rich gas over K2CO 3-promoted Rh/SiO2 catalysts: Effects of preparation method

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

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

The selective CO oxidation in H2-rich gas over K 2CO3-promoted Rh/SiO2 (K2CO 3-Rh/SiO2) catalysts was investigated, and the results were compared with those of Rh/SiO2 catalysts. K2CO 3Rh/SiO2 catalysts were able to realize almost complete removal of CO. The additive effect of K2CO3 was dependent on the preparation method and on the K2CO3 amounts. K 2CO3-Rh/SiO2 catalyst prepared by the sequential impregnation method with molar ratio K/Rh = 3 exhibited high performance. According to the characterization results, the catalyst had highly dispersed Rh metal particles partially covered with K2CO 3.

Original languageEnglish
Pages (from-to)295-302
Number of pages8
JournalApplied Catalysis A: General
Volume273
Issue number1-2
DOIs
Publication statusPublished - 2004 Oct 8
Externally publishedYes

Keywords

  • Carbon monoxide oxidation
  • Hydrogen
  • Potassium carbonate
  • Rhodium catalyst
  • Selective oxidation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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