Xylene isomerization

Details Xylene isomerization Xylene isomerization

1979-05-25

1980-12-02

Davis, C.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Reforming

585481, 585486, 585489, C10G 3504

Patent

active

042369967

ABSTRACT:
Isomerization of xylenes in admixture with ethylbenzene by contact with a zeolite catalyst such as ZSM-5 is improved by use of zeolite which has been steamed at high temperature to reduce activity, the reaction being at a temperature above about 700.degree. F. At these conditions, conversion of ethylbenzene follows a different reaction path which permits high conversion of ethylbenzene to benzene without loss of xylenes of disproportionation.

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

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