Comparative study between methane and ethane in catalytic partial oxidation over Pt and Rh foils using molecular-beam technique

Toshiaki Sasaki, Kenji Nakao, Keiichi Tomishige, Kimio Kunimori

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The effect of energetic activation of methane and ethane using molecular-beam techniques in their oxidation with O2 under steady-state condition was investigated over Pt and Rh foils. Energetic activation of methane and ethane by heating and seeding promoted the catalytic partial oxidation and enhanced hydrogen formation in particular. Based on the results on the reaction order measurements over Pt foil, one possible explanation for the promotion is that the energetically activated methane and ethane react with adsorbed oxygen and produce methoxy and ethoxy species, which are regarded as precursors for hydrogen formation. The production rates over Rh foil were smaller then over Pt foil, and lower O2 partial pressure was required to produce CO and hydrogen, which is related to the higher oxygen affinity of Rh.

Original languageEnglish
Pages (from-to)140-149
Number of pages10
JournalApplied Catalysis A: General
Volume328
Issue number2
DOIs
Publication statusPublished - 2007 Sep 10
Externally publishedYes

Keywords

  • Energetic activation
  • Ethane
  • Methane
  • Molecular-beam
  • Partial oxidation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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