Catalytic dimerization of ethylene on supported transition metal oxides. effect of the support nature

Palladium, nickel and cobalt oxides supported on the surface of various porous materials (g-Al 2 O 3 , B 2 O 3 /Al 2 O 3 , activated carbon and Sibunit) are considered as catalysts for ethylene dimerization. The use of alumina supports turned out to be fundamental for the synthesis of active palladium- and nickel-containing catalysts. Deposition on the carbon materials results in catalysts containing palladium and nickel predominantly in the metallic state, which does not provide the possibility of ethylene conversions. Cobalt catalysts, on the contrary, are most active when supported on a carbon surface due to the formation of CoO particles. These catalysts, due to the low density of acid sites on their surface, have an advantage in terms of achieving the maximum yield of butene-1, as the most valuable product of ethylene dimerization.