Rejuvenation of alkylation catalyst

Details Rejuvenation of alkylation catalyst Rejuvenation of alkylation catalyst

B - Operations, Transporting

01

J

252/2.B

B01J 29/90 (2006.01) C07C 2/66 (2006.01) B01J 29/40 (2006.01) B01J 38/12 (2006.01) B01J 38/62 (2006.01)

Patent

CA 1148524

REJUVENATION OF ALKYLATION CATALYST ABSTRACT A process whereby chemically modified zeolite catalysts are treated with an organic acid to enhance their intrinsic para-selectivity in reactions involving the alkylation of aromatic compounds. The modified zeolites which may be so treated comprise those crystalline zeolites having a Constraint Index of 1 to 12, a silica to alumina mole ratio of at least 12, and having a minor proportion of the oxide from of one or more chemical elements, e.g. phosphorus and magnesium, deposited thereon.

365552

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