PROCESS FOR CONTINUOUS ACTIVITY CONTROL OF COMPLEX ORGANO-METALLIC HALOGENEIDIC CATALYZER BETWEEN BENZENE ALKILIZING FOR PREPARATION OF ETHYL BENZENE

摘要

Process for the alkylation of aromatic hydrocarbons by reaction of an olefin with an aromatic hydrocarbon in the presence of a complex catalyst comprising a metal halide and aromatic hydrocarbons, which comprises measuring the activity of the catalyst by determination of the ratio of the dialkylated products to the trialkylated products and adding fresh metal halide in such amounts that said ratio is maintained at predetermined values.