Molybdenum ZSM-5 zeolite catalysts for the conversion of methane to benzene

J Z Zhang, M A Long, Russell Francis Howe

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Abstract

This paper describes characterization studies of Mo-HZSM-5 zeolite catalysts active for the non-oxidative conversion of methane to benzene. FTIR, Al-27 and Si-29 NMR evidence is presented for migration of molybdenum into the zeolite pores during catalyst calcination at high temperatures. Mo K-edge EXAFS confirms that calcination produces highly dispersed oxomolybdenum or molybdate species which are converted to a molybdenum carbide phase under reaction conditions. Factors determining catalyst performance are discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)293-300
Number of pages8
JournalCatalysis Today
Volume44
Issue number1-4
DOIs
Publication statusPublished - 30 Sep 1998

Keywords

  • molybdenum
  • ZSM-5
  • methane
  • EXAFS
  • MO/HZSM-5 catalysts
  • ammonium heptamolybdate
  • unsupported powders
  • carbide catalysts
  • aromatization
  • dehydrogenation
  • activation
  • oxygen
  • MO/ZSM-5
  • absence

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