SEARCH Articles Figures Tables Alkyl catalysts Alkylation catalysts Alkylation selective Alkylation selectivity Catalyst selection Catalyst selectivity Catalysts Friedel Crafts Catalysts heterogeneity Catalysts heterogeneous Catalysts heterogenous Friedel Crafts alkylation Friedel catalyst Friedel-Crafts alkylation catalyst Friedel-Crafts alkylations Heterogenized catalysts Selective catalysts