Toluene disproportionation over zeolite catalyst

Details Toluene disproportionation over zeolite catalyst Toluene disproportionation over zeolite catalyst

1976-02-12

1977-10-04

Davis, C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 362

Patent

active

040524760

ABSTRACT:
A process is provided for disproportionation of toluene in a reaction zone maintained under conditions such that said disproportionation is accomplished in the vapor-phase, with a hydrogen/hydrocarbon mole ratio of from 0 to 4, and in the presence of a catalyst comprising a crystalline aluminosilicate zeolite characterized by a silica/alumina mole ratio of at least 12 and a constraint index, hereinafter defined, within the approximate range of 1 to 12, said catalyst under said conditions being capable of long stability and of affording a high yield of disproportionation products with favorable selectivity toward para-xylene.

REFERENCES:
patent: 3751504 (1973-08-01), Keown et al.
patent: 3790471 (1974-02-01), Arqzurer et al.
patent: 3855328 (1974-12-01), Hedge

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