Comparative Study of Catalysts Based on Zeolites BEA and MWW in Benzene Alkylation with Propylene

The physicochemical properties of catalysts synthesized from zeolites of the BEA and MWW framework types using pseudoboehmite as a binder and their catalytic activity in benzene alkylation with propylene in the gas-phase and liquid-phase modes have been studied. It has been found that the MWW-based...

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Bibliographic Details
Published in:Petroleum chemistry 2019-08, Vol.59 (8), p.918-924
Main Authors: Ponomareva, O. A., Bok, T. O., Andriako, E. P., Shkuropatov, A. V., Knyazeva, E. E., Dobryakova, I. V., Ivanova, I. I.
Format: Article
Language:English
Subjects:
Alkylation
Benzene
Catalysis
Catalysts
Catalytic activity
Chemical synthesis
Chemistry
Chemistry and Materials Science
Comparative studies
Cumene
Hydrocarbons
Industrial Chemistry/Chemical Engineering
Liquid phases
Propylene
Selectivity
Zeolites
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Summary:The physicochemical properties of catalysts synthesized from zeolites of the BEA and MWW framework types using pseudoboehmite as a binder and their catalytic activity in benzene alkylation with propylene in the gas-phase and liquid-phase modes have been studied. It has been found that the MWW-based catalyst is characterized by stronger acidity in terms of both amount and strength of acid sites; however, the catalytic activity of this sample is inferior to that of zeolite BEA. The observed effect is attributed to the higher accessibility of acid sites in the three-dimensional system of zeolite BEA. With respect to some parameters, such as cumene selectivity and on-stream stability, zeolite MWW is superior to zeolite BEA; the difference is attributed to the structural features of these zeolites.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544119080152