Catalytic performance and characterization of Pt-Ni bimetallic catalysts for oxidative steam reforming of methane

Yuya Mukainakano, Kaori Yoshida, Shigeru Kado, Kazu Okumura, Kimio Kunimori, Keiichi Tomishige

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Effects of methane oxygen mixture addition to steam reforming of methane and subsequent removal of the methane oxygen mixture from the oxidative steam reforming of methane on catalytic performance were investigated using monometallic Ni and Pt catalysts and two Pt-Ni bimetallic catalysts. Hysteresis with respect to the addition and removal of the methane oxygen mixture was observed clearly on a Pt-Ni bimetallic catalyst prepared by co-impregnation method and the Ni catalyst. In contrast, no hysteresis was observed for a Pt-Ni catalyst that was prepared by sequential impregnation method. Combined with characterization results obtained using EXAFS analysis and FTIR of CO adsorption, Pt-Ni catalyst was prepared by sequential impregnation is formed Pt-Ni alloy particles, where Pt atoms are segregated on the surface, enhances the reducibility of Ni drastically and this is related to the behavior without hysteresis.

Original languageEnglish
Pages (from-to)4891-4901
Number of pages11
JournalChemical Engineering Science
Volume63
Issue number20
DOIs
Publication statusPublished - 2008 Oct 1
Externally publishedYes

Keywords

  • Combustion
  • Hot spot
  • Methane
  • Ni
  • Oxidative reforming
  • Pt
  • Steam reforming
  • Surface segregation
  • Thermography

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering
  • Applied Mathematics

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