Process of preparing a C.sub.6 to C.sub.8 hydrocarbon with a ste

Details Process of preparing a C.sub.6 to C.sub.8 hydrocarbon with a ste Process of preparing a C.sub.6 to C.sub.8 hydrocarbon with a ste

1997-01-30

1998-09-08

Griffin, Walter D.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Reforming

585470, 585475, 502 78, C10G 35095

Patent

active

058040595

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) contacting a zeolite with steam to produce a steamed zeolite; (2) optional contacting the steamed zeolite with an effective amount of an acid under a condition sufficient to effect a reduction in aluminum content of the zeolite to produce an acid-leached zeolite; and (3) impregnating the steamed or acid-leached zeolite with an effective amount of a metal compound under a condition sufficient to effect the production of a metal-promoted zeolite.

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