Process for the regioselective conversion of aromatics to para-d

Details Process for the regioselective conversion of aromatics to para-d Process for the regioselective conversion of aromatics to para-d

1992-09-02

1994-06-14

Pal, Asok

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By alkyl or aryl transfer between molecules, e.g.,...

585467, 585323, C07C 200, C07C 400, C07C 600

Patent

active

053211839

ABSTRACT:
Processes for converting a wide variety of aromatic hydrocarbons, such as polyalkylaromatics, into commercially useful para-substituted aromatics such as para-xylene are disclosed. The aromatic hydrocarbon feed stream is first partially converted into toluene which is then subjected to a highly para-selective methylation process. The present invention therefore provides novel processes and catalysts for increasing the para-selectivity in the selective production of para-substituted aromatic compounds. From the description provided herein, those skilled in the art will appreciate that the catalysts and processes of the present invention provide greater para-selectivity at conversion rates unattained by previously known methods.

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