Patent ID: 6297417
Filing Date: 2001-10-02
Classification: C07C,Y02P

Abstract:
A process of preparing an alkylated benzene or mixture of alkylated benzenes comprising (1) contacting a benzene feedstock having a water concentration of less than 200 ppm by weight with a solid acid in a pretreatment zone at a temperature greater than 130.degree. C. but less than 300.degree. C. to form a pretreated benzene feedstock, and thereafter (2) contacting the pretreated benzene feedstock with (a) an alkylating agent in an alkylation zone or (b) a transalkylating agent in a transalkylation zone, the contacting occurring in the presence of an alkylation/transalkylation catalyst selected from the group consisting of acidic mordenite, acidic beta zeolite, acidic Y zeolite, acidic omega zeolite, acidic L zeolite, and crystalline magnesium silicates, under liquid phase reaction conditions sufficient to produce the alkylated benzene or mixture of alkylated benzenes.