Promoters for controlling acidity and pore size of zeolite...

Details Promoters for controlling acidity and pore size of zeolite... Promoters for controlling acidity and pore size of zeolite...

2008-07-29

2008-07-29

Wood, Elizabeth D. (Department: 1793)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

C585S446000, C585S467000

Reexamination Certificate

active

10967881

ABSTRACT:
A metal-modified alkylation catalyst including a metalizeolite is provided where the metal is one or two selected from the group consisting of yttrium and a rare earth of the lanthanide series other than cerium. Where two metals are used, one may be Ce or La. The metal-promoted zeolite is useful as a molecular sieve aromatic alkylation catalyst for the production of ethylbenzene by the ethylation of benzene in the liquid phase or critical phase. An alkylation product is produced containing ethylbenzene as a primary product with the attendant production of heavier alkylated by-products of no more than 10-60 wt % of the ethylbenzene.

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