Deactivation and Regeneration of Mo/ZSM-5 Catalysts for Methane Dehydroaromatization

Authors

  • E. V. Matus Boreskov Institute of Catalysis, Novosibirsk, Russia
  • O. B. Sukhova Boreskov Institute of Catalysis, Novosibirsk, Russia
  • I. Z. Ismagilov Boreskov Institute of Catalysis, Novosibirsk, Russia
  • V. I. Zaikovskii Boreskov Institute of Catalysis, Novosibirsk, Russia
  • M. A. Kerzhentsev Boreskov Institute of Catalysis, Novosibirsk, Russia
  • Z. R. Ismagilov Boreskov Institute of Catalysis, Novosibirsk, Russia
  • K. D. Dosumov JCS “D.Sokolski Institute of Organic Catalysis and Electrochemistry”, Almaty, Kazakhstan
  • A. G. Mustafin Bashkir State University, Ufa, Russia

DOI:

https://doi.org/10.18321/ectj19

Abstract

The methane dehydroaromatization (DHA) was studied over a series of impregnated Mo/ZSM-5 catalysts with different molybdenum contents (1-10 wt.%). It was shown that total methane conversion was decreased by 30% during 12 h of DHA reaction. The benzene formation rate was increased from 0.5 to 13.9 mol C6H6/(gMo·s) when the molybdenum content in the catalyst was lowered from 10 to 1 wt.%. The deactivated Mo/ZSM-5 catalysts were studied by a group of methods: N2 adsorption, XRD, TGDTA, HRTEM and XPS. The content and condensation degree (C/H ratio) of the carbonaceous deposits was found to increase with an increase of either of the following parameters: molybdenum content (1-10 wt.%), reaction temperature (720-780 °C), space velocity (405-1620 h-1), reaction time (0.5-20 h). The stability of Mo/ZSM-5 catalysts in reaction-regeneration cycles was better when the time on stream was shorter. The regeneration conditions of deactivated Mo/ZSM-5 catalysts providing their stable operation under multiple reaction-regeneration cycles have been selected.

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Published

2010-01-22

How to Cite

Matus, E. V., Sukhova, O. B., Ismagilov, I. Z., Zaikovskii, V. I., Kerzhentsev, M. A., Ismagilov, Z. R., … Mustafin, A. G. (2010). Deactivation and Regeneration of Mo/ZSM-5 Catalysts for Methane Dehydroaromatization. Eurasian Chemico-Technological Journal, 12(1), 1–8. https://doi.org/10.18321/ectj19

Issue

Vol. 12 No. 1 (2010)

Section

Articles

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