Conversion of ethane into benzene on Mo2C/ZSM-5 catalyst

F. Solymosi, A. Szoke

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

The reaction of ethane on unsupported and supported molybdenum compounds has been investigated at 773-973 K. ZSM-5 was used as support. Reaction products were analyzed using gas chromatography. Changes in the composition of catalyst samples were followed by X-ray photoelectron spectroscopy. Unsupported MoO3 is partially reduced with ethane above 800 K to give H2O and CO2. The formation of H2, C2H4 and CH4 was also observed. Mo-free ZSM-5 exhibited relatively high activity towards dehydrogenation, hydrogenolysis and aromatization of ethane above 773 K. Deposition of MoO3 on ZSM-5 significantly enhanced the conversion of ethane and also the selectivity of benzene production. Alteration of the catalytic behaviour of MoO3/ZSM-5 in time on-stream at 773-973 K was attributed to the reaction of MoO3, to carbon deposition and to the formation of Mo2C. Unsupported Mo2C catalyzed the dehydrogenation of ethane without producing benzene. In contrast, Mo2C/ZSM-5 was found to be an effective catalyst in the aromatization of ethane. At 973 K the conversion of ethane was ∼67% and the selectivity to benzene formation 31%.

Original languageEnglish
Pages (from-to)225-235
Number of pages11
JournalApplied Catalysis A: General
Volume166
Issue number1
DOIs
Publication statusPublished - Jan 2 1998

Keywords

  • Benzene formation
  • Ethane conversion
  • MoC
  • ZSM-5

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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