ALKYLATION/TRANSALKYLATION PROCESS FOR SELECTIVE PRODUCTION OF MONOALKYLATED AROMATICS

摘要

"ALKYLATION/TRANSALKYLATION PROCESS FOR SELECTIVE PRODUCTIONOF MONOALKYLATED AROMATICS"ABSTRACTAn alkylation-transalkylation process for theselective production of a monoalkylated aromatic compound isdisclosed which maximizes the production of desirablemonoalkylaromatic compounds, while limiting transalkylationcatalyst deactivation. The process entails the combinationof an alkyaltion reaction step, a first separation step, asecond separation step, and a transalkylation reaction stepwherein the alkylation catalyst is comprised of phosphoricacid material and the transalkylation catalyst is comprisedof a crystalline aluminosilicate material. A key featureinvolves reducing transalkylation catalyst deactivation bytransalkylating only dialkylated aromatic compounds.