Selective hydrogenation catalyst

[0030] Prepare a nickel acetate solution with a concentration of 0.1mol / L, add a certain amount of LaNO with a concentration of 0.1mol / L 3 , so that the molar ratio of La to Ni is 1:30, the mixed solution is stirred and mixed evenly with a certain amount of aluminum sulfate / titanium sulfate mixed sol with a solid content of 20%, and the atomic ratio of Ti:Al in the sol is 0.12. Then prepare KBH with a concentration of 1.5mol / L 4 solution (B:Ni=3.0:1.0, atomic ratio), at 15°C, under the protection of Ar gas, the KBH 4 Drop it into the mixed solution of mixed sol and nickel salt at a speed of 1-6ml / min until no gas is generated in the reaction. Nickel constituted 15% by weight of the catalyst. The resulting catalyst is denoted as Al.

[0032] Prepare a nickel chloride solution with a concentration of 0.1mol / L, and add a certain amount of CeCl with a concentration of 0.1mol / L 2 , the molar ratio of Ce to Ni is 1:9, the mixed solution is stirred and mixed evenly with a certain amount of aluminum sulfate / titanium sulfate mixed sol with a solid content of 20%, and the atomic ratio of Ti:Al in the sol is 0.23, Then prepare KBH with a concentration of 1.5mol / L 4 solution (B:Ni=3.0:1.0, atomic ratio), at 20°C, under the protection of Ar gas, the KBH 4 Drop it into the mixed solution of mixed sol and nickel salt at a speed of 1-6ml / min until no gas is generated in the reaction. Nickel constituted 15% by weight of the catalyst. The resulting catalyst is designated A2.

[0034] Prepare a nickel nitrate solution with a concentration of 0.1mol / L, and add a certain amount of CrCl with a concentration of 0.1mol / L 3 , the molar ratio of Cr and Ni is 3:97, the mixed solution is stirred and mixed evenly with a certain amount of aluminum nitrate / titanium nitrate mixed sol with a solid content of 20%, and the atomic ratio of Ti:Al in the sol is 0.34, .Reconstitute KBH with a concentration of 1.5mol / L 4 solution (B:Ni=3.0:1.0, atomic ratio), at 25°C, under the protection of Ar gas, the KBH 4 Drop it into the mixed solution of mixed sol and nickel salt at a speed of 1-6ml / min until no gas is generated in the reaction. Nickel constituted 15% by weight of the catalyst. The resulting catalyst is designated A3.