2015, №3

сс. 39-48

Transformation of Alkylbenzenes in Oxidizing Medium on ZSM-5 Catalyst under Supercritical Conditions

2015, №3

сс. 39-48

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A.L. Kustov, A.N. Kalenchuk, V.V. Lunin, A.E. Koklin, V.I. Bogdan

Key words: alkylbenzenes, partial oxidation, H-ZSM-5

Reactions of substituted benzenes — toluene, p-xylene, fluorobenzene, phenol, cumene
and styrene — with nitrous oxide as an oxidant on H-ZSM-5 catalyst under supercritical
conditions at 345—420°C and 70—150 atm was investigated.


It is shown that the products of disproportionation, isomerization and condensation
that do not contain oxygen form predominantly. Only in the oxidation of toluene the
selectivity to oxidation product (cresols) reaches up to 35 %. The yield of corresponding
phenols in oxidation of alkyl-, hydroxy- and fluorobenzenes is negligible. Double bond
conjugated with π-system of benzene rings (styrene), as well as the presence of branched
alkyl substituents (in cumene) and hydroxyl-group (in phenol) hinder the formation
of benzene ring oxidation products.

doi:10.1134/S1990793116070113