Synthesis of diisopropylbenzene over dealuminated zeolite beta

Zeolite beta was used for isopropylation of cumene to diisopropylbenzenes. This zeolite deactivated with increase in time-on-stream period. To overcome the catalyst deactivation during reaction, two different stabilization methods viz. steaming and treatment with (NH 4) 2SiF 6were examined. A combin...

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Bibliographic Details
Published inJournal of molecular catalysis Vol. 88; no. 1; pp. 85 - 92
Main Authors Parikh, P.A., Subrahmanyam, N., Bhat, Y.S., Halgeri, A.B.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 22.02.1994
Elsevier Sequoia
Subjects
alkylation
Catalysis
Catalytic reactions
Chemistry
dealumination
diisopropylbenzene
Exact sciences and technology
General and physical chemistry
stabilization
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
zeolite beta
alkylation
dealumination
stabilization
diisopropylbenzene
zeolite beta
Cosmetic
Catalytic reaction
Hydrocarbon
Polymer
Zeolite
Experimental study
Alkylation
Molecular sieve
Heterogeneous catalysis
Dealumination
Synthesis
Benzenic compound
Cumene
Application
Catalyst
Modified material
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Summary:Zeolite beta was used for isopropylation of cumene to diisopropylbenzenes. This zeolite deactivated with increase in time-on-stream period. To overcome the catalyst deactivation during reaction, two different stabilization methods viz. steaming and treatment with (NH 4) 2SiF 6were examined. A combination of these two methods resulted in obtaining a steady stable catalytic performance during alkylation. The effects of various reaction conditions on the activity/selectivity behaviour of the stabilized zeolite have been studied.
ISSN:0304-5102
DOI:10.1016/0304-5102(93)E0257-H