Pore size engineering on MCM-41: Selectivity tuning of heterogenized AlCl3for the synthesis of linear alkyl benzenes

AlCl3 has been successfully immobilized on MCM-41 mesoporous silica of diff erent pore sizes to form a novel shape-selective catalyst for the Friedel-C rafts alkylation of benzene with long-chain olefins (linear 1-olefins with a chain length of 6 to 16 carbon atoms). The selectivity toward the monoalk ylated product is strongly influenced by the pore size of the carrier mater ial. This demonstrates the opportunities offered by the micelle-templating method to tailor shape-selective catalysts for reactions with bigger molecu les. (C) 2000 Academic Press.