Manufacture of xylenes

Details Manufacture of xylenes Manufacture of xylenes

1977-07-05

1978-04-25

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252455Z, 260671R, 260671C, C07C 352

Patent

active

040862895

ABSTRACT:
In the process of methylating toluene to obtain a mixture of xylenes by contacting toluene with hydrogen and a carbon oxide-containing gas in the presence of a catalyst, the improvement of using as catalyst zinc chromite mixed with an alkali metal exchanged molecular sieve containing a stoichiometric excess of an alkali metal carbonate, whereby a more favorable proportion of p-xylene is obtained.

REFERENCES:
patent: 3121754 (1964-02-01), Mattox et al.
patent: 3187063 (1965-06-01), Burk et al.
patent: 3718704 (1973-02-01), Chapman et al.

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