Alkylation process using UZM-8 zeolite

Details Alkylation process using UZM-8 zeolite Alkylation process using UZM-8 zeolite

2007-09-11

2007-09-11

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

Reexamination Certificate

active

11170420

ABSTRACT:
A process for the alkylation of aromatics with olefins using a solid catalyst bed containing UZM-8 zeolite is disclosed. A polyalkylated aromatic is passed to the catalyst bed to reduce the concentration of the olefin at alkylation conditions. A portion of the effluent recovered from the catalyst bed may be recycled to the catalyst bed. Such operation can decrease the catalyst deactivation rate and the formation of diphenylalkanes. The process disclosed herein is applicable to processes for the production of a wide variety of commercially important alkylated aromatics, including ethylbenzene and cumene.

REFERENCES:
patent: 5877370 (1999-03-01), Gajda
patent: 6043402 (2000-03-01), Gajda
patent: 6479721 (2002-11-01), Gajda et al.
patent: 6756030 (2004-06-01), Rohde et al.
patent: 6835862 (2004-12-01), Gajda et al.

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