A process for the alkylation of aromatics with olefins using a solid
catalyst is disclosed, wherein the olefin ratio and/or the maximum olefin
concentration in the alkylation catalyst bed is maintained less than an
upper limit. Such operation can decrease the catalyst deactivation rate
and the formation of diphenylalkanes. This invention is applicable to
processes for the production of a wide variety of commercially important
alkylated aromatics, including ethylbenzene and cumene.
