Process for producing alkylbenzenes using a catalyst based on a dealuminized Y zeolite and a catalyst based on a dealuminized mordenite

Abstract

The invention relates to a process for producing an alkylbenzene from benzene and an aliphatic mono-olefin in the presence of a catalyst based on a dealuminized Y zeolite with a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 ranging from 8 to 70, the product of this reaction being afterwards fractionated into a first fraction containing non converted benzene and a mono-alkylbenzene and a second fraction containing a poly-alkylbenzene, said second fraction reacting then with benzene in the presence of a catalyst based on a dealuminized mordenite with a total atomic ratio Si/Al ranging from 30 to 80. The invention especially applies to the production of ethylbenzene and cumene respectively from ethylene and propene.

Dependencies are inferred from the claim text.