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Title

Influencing the activity and selectivity of alkylaromatic catalytic transformations by varying the degree of delamination in MWW zeolites

AuthorsOsman, Mogahid; Al-Khattaf, Sulaiman; Díaz Morales, Urbano; Martínez Sánchez, Cristina; Corma, Avelino
Issue Date2016
PublisherRoyal Society of Chemistry (UK)
CitationCatalysis Science and Technology 6(9): 3166-3181 (2016)
AbstractThe degree of delamination and chemical composition of MWW zeolites have been varied by adjusting the synthesis parameters and modifying the temperature of the swelling step applied to the layered precursor (MCM-22(P)), and their impact on the catalytic behavior of these MWW materials for alkylaromatic transformation reactions has been studied. Kinetic experiments performed in a fluidized-type riser simulator have allowed us to establish a complete reaction network and to discern the impact of the catalyst's variables on competing alkylation and transalkylation of alkylbenzene molecules. In this way, the positive effect of delamination of the MWW layered precursor regarding the selectivity for the alkylation product with respect to transalkylation and catalyst deactivation has been confirmed by comparing a microporous MCM-22 with a highly delaminated ITQ-2 obtained from the same layered precursor, and also for 3D MCM-22 and highly delaminated ITQ-2 with comparable acidic properties.
Publisher version (URL)https://doi.org/10.1039/C5CY01675D
URIhttp://hdl.handle.net/10261/162196
Identifiersdoi: 10.1039/C5CY01675D
e-issn: 2044-4761
issn: 2044-4753
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