Disproportionation of toluene

Details Disproportionation of toluene Disproportionation of toluene

1976-10-21

1978-07-04

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 362

Patent

active

040988376

ABSTRACT:
Disproportionation of toluene 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, said catalyst having been modified by initial treatment with an ammonium phosphate followed by treatment with a magnesium compound to yield a composite containing a minor proportion of an oxide of phosphorus and a minor proportion of an oxide of magnesium.

REFERENCES:
patent: 3417157 (1968-12-01), Pollitzer
patent: 3551510 (1970-12-01), Pollitzer et al.
patent: 3651162 (1972-03-01), Pohlmann et al.
patent: 3790471 (1974-02-01), Argauer et al.
patent: 3808284 (1974-04-01), Wallace et al.
patent: 4011276 (1977-03-01), Chu

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