Promoting mechanism of potassium in preferential CO oxidation on Pt/Al2O3

Masatoshi Kuriyama, Hisanori Tanaka, Shin ichi Ito, Takeshi Kubota, Toshihiro Miyao, Shuichi Naito, Keiichi Tomishige, Kimio Kunimori

Research output: Contribution to journalArticlepeer-review

91 Citations (Scopus)


The addition of potassium enhanced the activity of preferential CO oxidation on Pt/Al2O3. The additive effect of potassium weakened the interaction between CO and Pt, and also changed the CO adsorption site. FTIR observations under the PROX conditions suggested the presence of adsorbed species derived from O2 and H2 such as OH species, which can be related to the promoting effect of H2 present in the PROX reaction.

Original languageEnglish
Pages (from-to)39-48
Number of pages10
JournalJournal of Catalysis
Issue number1
Publication statusPublished - 2007 Nov 15


  • AlO
  • Platinum
  • Potassium
  • Preferential CO oxidation


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