Sulphate-promotion and structure-sensitivity in hydrocarbon combustion over Rh2/AlO3 catalysts

Adam F. Lee, Ché R. Seabourne, Karen Wilson

Research output: Contribution to journalArticlepeer-review


A series of Rh2/AlO3 catalysts have been prepared using untreated or pre-sulphated alumina supports. The effect of support sulphation on catalyst activity towards propene and propane combustion has been explored as a function of Rh loading. Light-off temperatures for the total oxidation of both hydrocarbons decrease with increasing Rh content, associated with a transition from small oxidic clusters to large metallic Rh particles. Sulphate promotes both propene and propane combustion equally, with the magnitude of promotion exhibiting only a weak loading dependence. Enhanced catalytic performance is accompanied by Rh reduction and sintering.
Original languageEnglish
Pages (from-to)566-570
Number of pages5
JournalCatalysis Communications
Issue number8
Early online date9 Mar 2006
Publication statusPublished - Aug 2006


  • rhodium
  • sulphate
  • XPS
  • propane
  • propene
  • combustion


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