Patent ID: 7183452
Filing Date: 2007-02-27
Classification: B01J,C07C,Y02P

Abstract:
1. A process for preparing an alkylated aromatic composition comprising: (a) contacting at least one aromatic hydrocarbon with at least one olefin under alkylation conditions in the presence of a zeolite catalyst having a macropore structure comprising zeolite Y, and wherein the peak macropore diameter of the catalyst, measured by ASTM Test No. D 4284-03, is less than or equal to about 2000 angstroms and the cumulative pore volume of be catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram to form a first alkylated aromatic hydrocarbon product; (b) contacting at least one aromatic hydrocarbon with at least one olefin under alkylation conditions in the presence of a zeolite catalyst having a macropore structure comprising mordenite zeolite having a silica to alumina molar ratio of about 50:1 to about 105:1, and wherein the peak macropore diameter of the catalyst, measured by ASTM Test No. D 4284-03, is less than or equal to about 900 angstroms and the cumulative pore volume of the catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram to form a second alkylated aromatic hydrocarbon product; and (c) combining the first alkylated aromatic hydrocarbon product and the second alkylated aromatic hydrocarbon product to form the alkylated aromatic composition; wherein steps (a) and (b) can be conducted in any order.