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Methane dehydroaromatization over Mo and W catalysts supported on HZSM-5: the effect of preactivation and use of the CH4/H2 cycle

Abstract

In this paper, we have studied an increase in the conversion of methane dehydroaromatization (MDA) over Mo and W catalysts supported on HZSM-5. The effects of preactivation of the catalysts and the use of methane/hydrogen cycles on the catalytic activity and stability have been investigated. It was found that the activity was directly related to Brønsted sites on the external surface of HZSM-5 and the regeneration of these sites can augment the conversion in the MDA reaction. Moreover, the use of methane/hydrogen cycles removed a fraction of the coke formed during the reaction and improved the catalytic stability.

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Acknowledgment

The research was supported by National Iranian Oil Refining & Distribution Company (NIORDC).

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Correspondence to M. H. Peyrovi.

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Toosi, M.R., Sabour, B., Hamuleh, T. et al. Methane dehydroaromatization over Mo and W catalysts supported on HZSM-5: the effect of preactivation and use of the CH4/H2 cycle. Reac Kinet Mech Cat 101, 221–226 (2010). https://doi.org/10.1007/s11144-010-0206-y

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Keywords

  • Dehydroaromatization
  • HZSM-5
  • Carbide
  • Molybdenum catalysts
  • Tungsten catalysts