Xylene isomerization

Details Xylene isomerization Xylene isomerization

1978-06-05

1979-07-31

O'Keefe, Veronica

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By isomerization

585488, 585486, C07C 524

Patent

active

041630289

ABSTRACT:
Isomerization of xylenes in admixture with ethyl benzene by contact with a zeolite catalyst such as ZSM-5 is improved by use of zeolite having a silica/alumina ratio of at least 500 at a temperature above about 800.degree. F. At these conditions, conversion of ethyl benzene follows a different reaction path which permits high conversion of ethyl benzene to benzene without loss of xylenes by disproportionation.

REFERENCES:
patent: 3856871 (1974-12-01), Haag et al.
patent: 3856872 (1974-12-01), Morrison
patent: 3856873 (1974-12-01), Barress

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