Selective production of para-xylene

Details Selective production of para-xylene Selective production of para-xylene

1976-04-02

1977-01-04

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260671R, 260671C, C07C 352, C07C 1508

Patent

active

040013464

ABSTRACT:
Process for the selective production of para-xylene by methylation of toluene in the presence of a catalyst comprising a crystalline aluminosilicate zeolite, said zeolite having a silica to alumina ratio of at least 12 and a constraint index, as hereinafter defined, within the approximate range of from 1 to 12, which catalyst has undergone prior treatment to deposit a coating of between about 15 and about 75 weight percent of coke thereon.

REFERENCES:
patent: 3394075 (1968-07-01), Smith
patent: 3437587 (1969-04-01), Ellert et al.
patent: 3489675 (1970-01-01), Scott
patent: 3669903 (1972-06-01), Bourguet et al.
patent: 3728408 (1973-04-01), Tobias
patent: 3751506 (1973-08-01), Buress
patent: 3755483 (1973-08-01), Burress

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