Oxidative benzene methylation with Methane over MCM-41 and Zeolite Catalysts: Effect of Framework Aluminum, SiO2/Al2O3 ratio, and Zeolite Pore Structure
Adebajo, Moses O. & Frost, Ray L. (2005) Oxidative benzene methylation with Methane over MCM-41 and Zeolite Catalysts: Effect of Framework Aluminum, SiO2/Al2O3 ratio, and Zeolite Pore Structure. Energy and Fuels, 19(3), pp. 783-790.
The effect of framework aluminium, SiO2/Al2O3 ratio and zeolite pore structures on the oxidative methylation of benzene with methane in a high-pressure batch reactor have been studied using a range of MCM-41 samples and zeolites as catalysts. The presence of framework aluminium in MCM-41 has been shown to be important for providing the required Brönsted acid sites for the reaction. Among the catalysts tested, HZSM-5, CoZSM-5 and H-beta were found to exhibit the best perfomance while mordenite was found to be virtually inactive for the reaction. HY and NaY exhibited intermediate performance, but HY, due to its higher acidity, was more active than NaY. H-beta, being more acidic, showed slightly higher activity than the ZSM-5 catalysts due to extra contribution to methylated products formation by cracking of benzene without participation of methane. Differences in the catalytic activities and product selectivities of these catalysts have also been discussed in terms of the variations in the number of available Brönsted acid sites, SiO2/Al2O3 ratios and zeolite pore structures.
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|Item Type:||Journal Article|
|Additional Information:||This article is freely available from the American Chemical Society website 12 months after the publication date. See links to publisher website in this record.|
|Keywords:||Methane conversion, oxidative benzene methylation, zeolite catalysts, framework aluminum, SiO2/Al2O3 ratio, Bronsted acid sites|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Catalysis and Mechanisms of Reactions (030601)|
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200) > Solid State Chemistry (030206)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2005 American Chemical Society|
|Deposited On:||11 Oct 2005|
|Last Modified:||29 Feb 2012 23:14|
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