Surface species and gas phase products in steam reforming of ethanol on TiO2 and Rh/TiO2

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

The effect of water on the formation and stability of surface species in ethanol adsorption on TiO2 and Rh/TiO2 was studied by FTIR. The changes of the gas phase during the adsorption processes and different treatments were monitored and TPD spectra were registered by mass spectrometer. It was found that water enhanced the stability of strongly held C 2H5OH, while the stability of monodentate ethoxide was less due to water. Dehydrogenation of molecularly adsorbed ethanol resulting in the formation of adsorbed acetaldehyde and gas phase H2 have been proposed as key reaction step. Surface acetaldehyde and gas phase H2 appeared at lower temperature and in a greater amount in the presence of Rh and water. A possible mechanism of the reaction was discussed.

Original languageEnglish
Pages (from-to)13-25
Number of pages13
JournalApplied Catalysis A: General
Volume269
Issue number1-2
DOIs
Publication statusPublished - Aug 18 2004

Fingerprint

Steam reforming
Ethanol
Gases
Acetaldehyde
Water
Adsorption
Mass spectrometers
Dehydrogenation
Temperature programmed desorption
Temperature

Keywords

  • Ethanol steam reforming
  • FTIR
  • Gas phase products
  • Mass spectrometry
  • Surface species
  • TiO and Rh/TiO

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Surface species and gas phase products in steam reforming of ethanol on TiO2 and Rh/TiO2. / Raskó, J.; Hancz, A.; Erdohelyi, A.

In: Applied Catalysis A: General, Vol. 269, No. 1-2, 18.08.2004, p. 13-25.

Research output: Contribution to journalArticle

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