Process for dismutation and transalkylation of aromatic hydrocar

Details Process for dismutation and transalkylation of aromatic hydrocar Process for dismutation and transalkylation of aromatic hydrocar

1986-08-28

1988-02-02

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By alkyl or aryl transfer between molecules, e.g.,...

585475, C07C 522

Patent

active

047230487

ABSTRACT:
The invention concerns an improved process for dismutation and transalkylation of alkylaromatic hydrocarbons in the presence of a catalyst consisting essentially of acid mordenite having a total SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio from 9 to 80 and a sodium content lower than 1% by weight, said catalyst containing at least one metal selected from group M formed of nickel, palladium and metals from group I.sub.B of the periodic classification of elements and containing at least one metal of group IV.sub.A of said classification.
The catalyst preferably contains from 30 to 99.9 % by weight of mordenite, from 0.005 to 25% by weight of a group M metal, from 0.05 to 10% by weight of a group IV.sub.A metal and optionally up to 50% by weight of a binding agent.
The invention is particularly useful for dismutation of toluene or transalkylation of toluene and of alkylaromatic hydrocarbons having at least 9 carbon atoms per molecule.

REFERENCES:
patent: 3892657 (1975-07-01), Wilhelm
patent: 4051018 (1977-09-01), Knapik et al.
patent: 4131536 (1978-12-01), Adams et al.
patent: 4175031 (1979-11-01), Antos

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