Zeolite catalyst composition and processes therefor and therewit

Details Zeolite catalyst composition and processes therefor and therewit Zeolite catalyst composition and processes therefor and therewit

1998-03-03

1999-10-12

Griffin, Walter D.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

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

585489, 208136, C07C 522, C07C 412, C10G 3506

Patent

active

059657820

ABSTRACT:
A catalyst composition, a process for producing the composition and a process for transalkylation of C.sub.9 + aromatic compounds to C.sub.6 to C.sub.8 aromatic hydrocarbons are disclosed. The composition comprises a zeolite and tungsten wherein tungsten is preferably present as tungsten carbide which is impregnated on the zeolite. A preferred process for producing the catalyst composition which comprises: (1) contacting a zeolite with an effective amount of an acid under a condition sufficient to produce an acid-leached zeolite; and (2) impregnating acid-leached zeolite with an effective amount of tungsten-containing compound under a condition sufficient to effect the production of a tungsten carbide-promoted zeolite. The transalkylation process comprises contacting, in the presence of the catalyst composition, a fluid which comprises a C.sub.9 + aromatic compound with a hydrogen-containing fluid under a condition sufficient to effect the conversion of a C.sub.9 + aromatic compound to a C.sub.6 to C.sub.8 aromatic hydrocarbon.

REFERENCES:
patent: 4501926 (1985-02-01), LaPierre et al.
patent: 4518485 (1985-05-01), LaPierre
patent: 5321161 (1994-06-01), Vreugdenhil et al.
patent: 5338716 (1994-08-01), Triplett et al.
patent: 5776852 (1998-07-01), Wu et al.

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