Interaction of acetonitrile with oxygen on TiO2-supported Au catalysts: FTIR-MS study

Research output: Contribution to journalArticle

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Abstract

The adsorption and surface reactions of acetonitrile and acetonitrile-oxygen gas mixture were studied on TiO2-supported Au catalysts at 300-673 K. FTIR spectra show different kinds of molecularly adsorbed CH3CN:acetonitrile can be bonded to weak Lewis acid sites (2295 cm-1), to strong Lewis acid sites (2337 cm-1) of titania; it can be coordinated linearly through the lone electron pair of the N atom on Au sites and η2 (C,N) CH3CN species can be formed on Au particles. CH3CN dissociates on Au sites, the resulting CN(a) can be oxidized in small extent by lattice oxygen and in a greater extent by gaseous oxygen into NCO surface species. The formation of other products (CH3NH2, H2, CO2, CH4, C2H4 and CO) was demonstrated and discussed.

Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalCatalysis Letters
Volume109
Issue number1-2
DOIs
Publication statusPublished - Jun 2006

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Acetonitrile
Catalyst supports
acetonitrile
Lewis Acids
Oxygen
catalysts
oxygen
acids
Acids
Surface reactions
interactions
Carbon Monoxide
Gas mixtures
surface reactions
gas mixtures
titanium
Titanium
Adsorption
Atoms
adsorption

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Interaction of acetonitrile with oxygen on TiO2-supported Au catalysts : FTIR-MS study. / Raskó, J.; Kiss, J.

In: Catalysis Letters, Vol. 109, No. 1-2, 06.2006, p. 71-76.

Research output: Contribution to journalArticle

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