A new catalyst for selective oxidation of CO in H 2: Part 1, activation by depositing a large amount of FeO x on Pt/Al 2O 3 and Pt/CeO 2 catalysts

Ken Ichi Tanaka, Yoshihiko Moro-Oka, Kenkichi Ishigure, Tatsuhiko Yajima, Yosio Okabe, Yoshinobu Kato, Haruo Hamano, Shu Ichi Sekiya, Hiroto Tanaka, Yuji Matsumoto, Hideomi Koinuma, Hong He, Changbin Zhang, Qingcai Feng

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

1% Pt/Al 2O 3 and 1% Pt/CeO 2 are markedly activated by the deposition of a large quantity of FeO x, about 100 wt% in Fe with respect to the supports. In contrast, the activity of a Ru/Al 2O 3 catalyst was completely suppressed by the deposition of FeO x, but a Ru-Pt/Al 2O 3 was markedly activated by the FeO x. The activation depends on the sequence of the deposition, that is, no pronounced activation was observed on the Pt supported on a FeO x/Al 2O 3 as well as on the Pt codeposited with a small amount of Fe on A1 2O 3, that is, the activity was almost equal to that of the Pt/Al 2O 3. The XPS analysis of the Pt/CeO 2 and FeO x/Pt/CeO 2 proved that the Pt is effectively covered with the FeO x. Selectivity for the oxidation of CO in H 2 was also improved on the FeO x/Pt/Al 2O 3 and FeO x/Pt/CeO 2 catalysts and it is rather independent of the conversion. In conformity with the feature of the FeO x/Pt/Al 2O 3 and FeO x/Pt/CeO 2 catalysts, we deduced that the deposited FeO x is activated by the Pt and the FeO x is responsible for the selective oxidation of CO.

Original languageEnglish
Pages (from-to)115-121
Number of pages7
JournalCatalysis Letters
Volume92
Issue number3-4
Publication statusPublished - 2004 Feb 1
Externally publishedYes

Keywords

  • Activation of Fe O
  • Activation of Pt/Al O and Pt/CeO catalyst by Fe O
  • Selective oxidation of CO in H
  • Synergistic effect of Fe O

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'A new catalyst for selective oxidation of CO in H <sub>2</sub>: Part 1, activation by depositing a large amount of FeO <sub>x</sub> on Pt/Al <sub>2</sub>O <sub>3</sub> and Pt/CeO <sub>2</sub> catalysts'. Together they form a unique fingerprint.

  • Cite this

    Tanaka, K. I., Moro-Oka, Y., Ishigure, K., Yajima, T., Okabe, Y., Kato, Y., Hamano, H., Sekiya, S. I., Tanaka, H., Matsumoto, Y., Koinuma, H., He, H., Zhang, C., & Feng, Q. (2004). A new catalyst for selective oxidation of CO in H 2: Part 1, activation by depositing a large amount of FeO x on Pt/Al 2O 3 and Pt/CeO 2 catalysts. Catalysis Letters, 92(3-4), 115-121.