Patent ID: 6977319

Claim:
A process for preparing an alkylated aromatic composition comprising contacting at least one aromatic hydrocarbon with at least one olefin in the presence of a zeolite catalyst having a macropore structure comprising zeolite Y and mordenite zeolite, wherein the mordenite zeolite has 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 2000 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.