Abstract: The effect of catalysts P-2.00-Ni(Nickel boride) and P-2.00-Ni-M(M: Co, Fe, Cu, Sn), prepared by adopting a modified recipe, on the chemoselective hydrogenation of carbon-carbon double bonds in α,β- unsaturated ketones, and the activity of catalysts P 1.80 Ni, P-2.00-Ni or P-1.80(2 00)-Ni-M(M: Pd, Co, Cu) in the selective hydrogenation of carbon-carbon double bonds in α,β-unsaturated carboxylic esters, were investigated systematically. According to the experimental results, the selectivities of these catalysts toward the hydrogenation of the carbon carbon double bonds of α,β-unsaturated keones or α,β-unsaturated carboxylic esters are 96%—100% or 100%, respectively.

Key words: α,β-Unsaturated ketone, Nickel boride, α,β-Unsaturated carboxylic ester