Xylene isomerization

Details Xylene isomerization Xylene isomerization

1984-01-20

1984-12-25

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By isomerization

C07C 524

Patent

active

RE0317829

ABSTRACT:
A catalytic process is provided for isomerizing an isomerization feed containing an aromatic C.sub.8 mixture of ethylbenzene and xylene in which the para-xylene content is less than equilibrium which comprises contacting said feed, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite having a crystal size of at least about 1 micron, 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 to yield an isomerization product characterized by a reduced ethylbenzene content and an enhanced para-xylene content.

REFERENCES:
patent: 3856871 (1974-12-01), Haag et al.
patent: 3856872 (1974-12-01), Morrison
patent: 3856873 (1974-12-01), Buress
patent: 4025571 (1977-05-01), Lago
patent: 4101596 (1978-07-01), Mitchell et al.

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