Disproportionation of toluene

Details Disproportionation of toluene Disproportionation of toluene

1978-02-24

1980-01-08

Davis, C.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

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

C07C 362

Patent

active

041829239

ABSTRACT:
Disproportionation of toluene with high conversion thereof to produce benzene and xylenes rich in the para isomer is accomplished by subjecting toluene to disproportionation conditions in the presence of a catalyst comprising a crystalline aluminosilicate zeolite, said zeolite having a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12, which catalyst has undergone prior modification by treatment with an ammonium hydrogen phosphate to deposit at least about 0.5 weight percent of phosphorus thereon.

REFERENCES:
patent: 4011276 (1977-03-01), Chu
patent: 4016219 (1977-04-01), Kaeding
patent: 4098837 (1978-07-01), Chu

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