Manufacture of benzene, toluene and xylene

Details Manufacture of benzene, toluene and xylene Manufacture of benzene, toluene and xylene

1978-06-12

1980-02-12

Davis, C.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Reforming

585470, 585481, C10G 3504, C07C 524

Patent

active

041882822

ABSTRACT:
Benzene, toluene and xylene are prepared from mixtures of single ring alkyl aromatic compounds of eight or more carbon atoms concurrently with isomerization of xylenes by mixing xylenes from which at least one isomer has been separated with a mixture of alkyl benzenes of eight and more carbon atoms, e.g. heavy reformate, and contacting that mixture at 800.degree. to 1000.degree. F. with a zeolite catalyst of reduced activity such as zeolite ZSM-5 having a silica to alumina ratio of at least 200.

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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