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Friedel–Crafts alkylation of benzene with linear chain ole fin(C_(10)–C_(14)),which is an important reaction of synthetic detergent,was studied via different catalysts of aluminum impregnated silica molecular sieves.AlCl_3 was immobilized on silica molecular sieves with different channel structures,hexagonal packing channels network(SBA-15,MCM-41),and disordered channel network(SiO_2,SiO_2-Gel) by impregnation.XRD and N_2 adsorption–desorption isotherms con firmed that the speci fic mesoporous structures were maintained for order channel network catalyst after impregnation.Catalytic activities were investigated under different conditions.The in fluences of channel structure were discussed.The results showed that catalyst based on mesoporous like SBA-15 had the highest catalytic activities and 2-LAB selectivity compared with other catalysts in this work.The highest 2-LAB selectivity was nearly 50% when 1-dodecene conversion was nearly 100%.At low 1-dodecene conversion or higher benzene/1-dodecene molar ratio,2-LAB selectivity was nearly 60%.
Friedel-Crafts alkylation of benzene with linear chain ole fin (C_ (10) -C_ (14)), which is an important reaction of synthetic detergent, was studied via different catalysts of aluminum impregnated silica molecular sieves. AlCl_3 was immobilized on silica molecular sieves with different channel structures, hexagonal packing channels network (SBA-15, MCM-41), and disordered channel network (SiO_2, SiO_2-Gel) by impregnation. XRD and N_2 adsorption-desorption isotherms con firmed that the speci fic mesoporous structures were maintained for order channel network catalyst after impregnation. Catalyst activities were investigated under different conditions. in fluences of channel structure were discussed. The results showed that catalyst based on mesoporous like SBA-15 had the highest catalytic activities and 2-LAB selectivity compared with with other catalysts in this work.The highest 2-LAB selectivity was nearly 50% when 1-dodecene conversion was nearly 100%. At low 1-dodecene conversion or higher be nzene / 1-dodecene molar ratio, 2-LAB selectivity was nearly 60%.