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Reaction Kinetics, Mechanisms and Catalysis

, Volume 101, Issue 1, pp 221–226 | Cite as

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

  • M. R. Toosi
  • B. Sabour
  • T. Hamuleh
  • M. H. Peyrovi
Article

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.

Keywords

Dehydroaromatization HZSM-5 Carbide Molybdenum catalysts Tungsten catalysts 

Notes

Acknowledgment

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

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  • M. R. Toosi
    • 1
  • B. Sabour
    • 2
  • T. Hamuleh
    • 2
  • M. H. Peyrovi
    • 2
  1. 1.Department of ChemistryIslamic Azad UniversityGhaemshahrIran
  2. 2.Department of Chemistry, Faculty of ScienceShahid Beheshti UniversityTehranIran

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