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

M. Toosi; B. Sabour; T. Hamuleh; M. Peyrovi

doi:10.1007/s11144-010-0206-y

Reaction Kinetics, Mechanisms and Catalysis

Volume/Issue:: Volume 101: Issue 1

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

Authors:

M. Toosi

M. Toosi Department of Chemistry, Islamic Azad University, Ghaemshahr Branch, Ghaemshahr, Iran

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B. Sabour

B. Sabour Department of Chemistry, Faculty of Science, Shahid Beheshti University, 1983963113 Tehran, Iran

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T. Hamuleh

T. Hamuleh Department of Chemistry, Faculty of Science, Shahid Beheshti University, 1983963113 Tehran, Iran

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, and

M. Peyrovi

M. Peyrovi Department of Chemistry, Faculty of Science, Shahid Beheshti University, 1983963113 Tehran, Iran

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Pages:: 221–226

Online Publication Date:: 03 Jun 2010

Publication Date:: 01 Oct 2010

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s11144-010-0206-y

Keywords:: Dehydroaromatization; HZSM-5; Carbide; Molybdenum catalysts; Tungsten catalysts

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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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Reaction Kinetics, Mechanisms and Catalysis

Print ISSN:: 1878-5190

Online ISSN:: 1878-5204

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Reaction Kinetics, Mechanisms and Catalysis
Language	English
Size	B5
Year of Foundation	1974
Volumes per Year	1
Issues per Year	6
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Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
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ISSN	1878-5190 (Print)
ISSN	1878-5204 (Online)