Reactivity of [Ga.sub.2][O.sub.3] clusters on zeolite ZSM-5 for the conversion of methanol to aromatics

Composites of [Ga.sub.2][O.sub.3] clusters and zeolite ZSM-5 were evaluated for the transformation of methanol to hydrocarbons. Comparison of the activity with ZSM-5 showed that the [Ga.sub.2][O.sub.3] clusters are responsible for the enhanced selectivity to aromatics via contact synergy, thus showi...

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Bibliographic Details
Published in:Catalysis letters 2012-09, Vol.142 (9), p.1049
Main Authors: Lopez-Sanchez, Jose A, Conte, Marco, Landon, Phil, Zhou, Wu, Bartley, Jonathan K, Taylor, Stuart H, Carley, Albert F, Kiely, Christopher J, Khalid, Karim, Hutchings, Graham J
Format: Article
Language:English
Subjects:
Methanol
Zeolites
Online Access:Get full text
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Summary:Composites of [Ga.sub.2][O.sub.3] clusters and zeolite ZSM-5 were evaluated for the transformation of methanol to hydrocarbons. Comparison of the activity with ZSM-5 showed that the [Ga.sub.2][O.sub.3] clusters are responsible for the enhanced selectivity to aromatics via contact synergy, thus showing the importance of non framework gallium species for this reaction. TEM analysis of fresh and spent catalysts allowed the identification of the formation of carbonaceous products at the [Ga.sub.2][O.sub.3]/zeolite interface region, and this interface is also the probable location of the catalyst active sites.
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-012-0869-2