Reactions of propane on supported Mo2C catalysts

F. Solymosi, R. Németh, L. Óvári, L. Egri

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Abstract

A study on the adsorption and reactions of propane over Mo2C deposited on ZSM-5 and SiO2 revealed that propane adsorbed weakly and nondissociatively on Mo2C catalyst at 150-273 K. At higher temperatures, the characteristic vibrations of π-bonded and di-σ-bonded propylene and propylidyne were identified by FTIR. The dominant reaction of propane over Mo2C/SiO2 at 773-873 K was its dehydrogenation into propylene. At 873 K, the selectivity of propylene formation attained a value of 35-50% at 35-25% conversion. The reaction pathway of propane was different on Mo2C/ZSM-5. The aromatization of propane was the main process in this case. Mo2C improved the effect of pure ZSM-5 in this reaction. The positive influence of Mo2C was explained by its high activity toward the dehydrogenation of propane. No inhibition was observed in a study of the effect of Mo2C on the aromatization of propylene occurring on the acidic sites of ZSM-5.

Original languageEnglish
Pages (from-to)316-325
Number of pages10
JournalJournal of Catalysis
Volume195
Issue number2
DOIs
Publication statusPublished - Oct 25 2000

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Keywords

  • Adsorption of propane
  • Benzene from propane
  • Dehydrogenation into propylene
  • FTIR spectroscopy
  • Supported MoC catalysts
  • ZSM-5 support

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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