Low-temperature catalytic alkylation of benzene by propane

Interaction of benzene with propane (C 6H 6:C 3H 8=1:9) was studied at 453–623 K in the presence of acidic HY-zeolite Pt, Re/Al 2O 3 bimetal alumina catalysts (APRC), and mixed (50% APRC+50%HY) catalyst (mixed catalyst, MC) systems with Pt and Re content 0.3 and 0.5%, respectively. Unlike inactive s...

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Bibliographic Details
Published in:Applied catalysis. A, General General, 2003-09, Vol.251 (2), p.267-274
Main Authors: Abasov, S.I., Babayeva, F.A., Zarbaliyev, R.R., Abbasova, G.G., Tagiyev, D.B., Rustamov, M.I.
Format: Article
Language:English
Subjects:
Benzene dehydroalkylation
Catalysis
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
Mixed catalysts
Propane
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Interaction of benzene with propane (C 6H 6:C 3H 8=1:9) was studied at 453–623 K in the presence of acidic HY-zeolite Pt, Re/Al 2O 3 bimetal alumina catalysts (APRC), and mixed (50% APRC+50%HY) catalyst (mixed catalyst, MC) systems with Pt and Re content 0.3 and 0.5%, respectively. Unlike inactive separate components, MC activates benzene dehydroalkylation (DHA) by propane even at 453 K to form isopropylbenzene (IPB) and hydrogen. Increased temperatures lead to the formation of additional products, such as propene (at 523 K) and other alkylbenzenes (at 573 K). Activation of benzene–propane mixture is characterized by an induction period prior to the formation of conversion products. MC treatment by ammonia at 423 K leads to increase of selectivity of IPB formation. The mechanism of low-temperature DHA of benzene over MC has been proposed.
ISSN:0926-860X
1873-3875
DOI:10.1016/S0926-860X(03)00342-9