Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – To produce aromatic
Patent
1990-06-07
1993-01-05
Pal, Asok
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
To produce aromatic
585467, 585475, C07C 264, C07C 552
Patent
active
051772809
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.
REFERENCES:
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patent: 4459426 (1984-07-01), Inwood et al.
patent: 4870222 (1989-09-01), Bakas et al.
Gnep et al., "Creation de mesopores dans des zeolithes monodimensionnelles. Une methode pour ameliorer leur stabilite catalytique," C. R. Acad. Sci. Paris, vol. 309, Series 11, pp. 1743-1747, 1989.
Dufresne Pierre
Juguin Bernard
Martino Germain
Raatz Francis
Achutamurthy P.
Institut Francais du Pe'trole
Pal Asok
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