FTIR and mass spectrometric study of the interaction of ethanol and ethanol-water with oxide-supported platinum catalysts

J. Raskó, M. Dömök, K. Baán, A. Erdohelyi

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

The formation and stability of surface species formed in the interaction of ethanol and ethanol-water mixture with Al2O3-, TiO 2- and CeO2-supported Pt catalysts were studied by FTIR. The changes of the gas phase composition during the above processes were monitored by mass spectrometer. It was found that water enhanced the stability of ethoxide surface species formed in the dissociation of ethanol on Pt catalysts and suppressed the formation of CO. Dehydrogenation of molecularly adsorbed ethanol was proposed as a key reaction step. On the temperature programmed desorption (TPD) spectra of adsorbed ethanol in the case of supported Pt there is a high temperature desorption stage, which was explained by the formation and decomposition of surface acetate species. A possible mechanism of the reaction is discussed.

Original languageEnglish
Pages (from-to)202-211
Number of pages10
JournalApplied Catalysis A: General
Volume299
Issue number1-2
DOIs
Publication statusPublished - Jan 17 2006

Keywords

  • Ethanol steam reforming
  • Gas phase products
  • Oxide-supported Pt catalysts
  • Reaction of ethanol with water
  • Surface species
  • TPD of ethanol

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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