Process for converting a c.sub.9 + hydrocarbon to a C.sub.6 to C

Details Process for converting a c.sub.9 + hydrocarbon to a C.sub.6 to C Process for converting a c.sub.9 + hydrocarbon to a C.sub.6 to C

1997-01-30

1999-02-02

Griffin, Walter D.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By dealkylation

585470, 585475, 585488, 585486, 208135, 208137, 208138, 208141, 502 64, 502 66, 502 81, 502 83, C07C 412

Patent

active

058667440

ABSTRACT:
A catalyst composition and a process for converting a hydrocarbon stream such as, for example, a C.sub.9 + aromatic compound to C.sub.6 to C.sub.8 aromatic hydrocarbons such as xylenes are disclosed. The catalyst composition comprises an aluminosilicate, and a metal wherein the weight ratio of aluminum to silicon is in the range of from about 0.002:1 to about 0.6:1. The process comprises contacting a hydrocarbon stream with the catalyst composition under a condition sufficient to effect the conversion of a hydrocarbon to a C.sub.6 to C.sub.8 aromatic hydrocarbon. Also disclosed is a process for producing the catalyst composition which comprises: (1) optionally contacting a beta zeolite with steam to produce a steamed beta zeolite; (2) contacting a beta zeolite or the steamed beta zeolite with an effective amount of an acid under a condition sufficient to effect a reduction in aluminum content of the beta zeolite to produce an acid-leached beta zeolite; and (3) impregnating the acid-leached beta zeolite with an effective amount of a metal compound under a condition sufficient to effect the production of a metal-promoted beta zeolite.

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