MODIFIED NICKEL-ALUMINA CATALYST FOR SELECTIVE HYDROGENATION OF DIOLEFINS AND PREPARATION METHOD THEREOF

摘要

PURPOSE: The modified nickel-alumina catalyst for selective hydrogenation of diolefins of the present invention is manufactured by surface modifying gamma-alumina support with one element selected from zirconium, lanthanum and tin, and then it is further supported by nickel. CONSTITUTION: In a modified nickel-alumina catalyst for selective hydrogenation of diolefins that is manufactured by surface modifying gamma-alumina support with one element selected from zirconium, lanthanum and tin, and then it is further supported by nickel, the present invention is characterized in that gamma-alumina support is supported by one element selected from zirconium, lanthanum and tin in an amount of 0.2 to 10 wt.% and nickel in an amount of 0.5 to 10 wt.%, based on the weight of the gamma-alumina support. Before the modified nickel-alumina catalyst is used to convert diolefins to corresponding mono olefins through selective hydrogenation reaction, the modified nickel-alumina catalyst should undergo reduction stage at 400-500deg.C and pretreatment at 300-450deg.C in H2S gas atmosphere.