Conversion of ethyl benzene to para xylene

Details Conversion of ethyl benzene to para xylene Conversion of ethyl benzene to para xylene

1977-05-02

1978-07-18

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260672T, 260674A, C07C 524, C07C 362, C07C 701

Patent

active

041015959

ABSTRACT:
Monoalkyl benzene having a side chain of at least two carbon atoms is converted to dialkyl benzene having side chains of shorter length than the charge and containing a proportion of para dialkyl benzene in excess of the thermodynamic equilibrium value by reaction over a dual function catalyst comprising a noble metal from Group VIII of the Periodic Table and a crystalline aluminosilicate zeolite of high silica/alumina ratio above 12, a constraint index of 1 to 12, which aluminosilicate is in a state to restrict diffusion of ortho xylene.

REFERENCES:
patent: 3516925 (1970-06-01), Lawrence et al.
patent: 3637881 (1972-01-01), Williams et al.
patent: 3763260 (1973-10-01), Pollitzer
patent: 3766287 (1973-10-01), Stenmark et al.
patent: 3767721 (1973-10-01), Sonoda et al.
patent: 3856872 (1974-12-01), Morrison
patent: 3948758 (1976-04-01), Bonacci et al.
patent: 3997618 (1976-12-01), Cornely et al.

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