Chemistry of hydrocarbon compounds – Aromatic compound synthesis
Reexamination Certificate
2008-07-29
2008-07-29
Wood, Elizabeth D. (Department: 1793)
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
C585S446000, C585S467000
Reexamination Certificate
active
07405336
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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Butler James R.
Kelly Kevin P.
Fina Technology, Inc.
Kopecky Shirley A.
Krueger Tenley R.
Wood Elizabeth D.
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