Patent ID: 8211823

Claim:
A selective hydrogenation catalyst comprising alumina as a carrier and palladium (Pd) as an active component that is distributed on the surface of the carrier in an egg-shell form, wherein based on the total weight of the catalyst, it comprises: 0.2 to 0.5 wt % Pd as an active component, 2 to 8 wt % lanthanum and/or cerium as aids, 2 to 8 wt % alkaline earth metal, and 0 to 2.0 wt % Ag and/or K, wherein said catalyst has a shell thickness of 0.07 to 0.15 mm, a specific surface area of 70 to 150 m 2 /g, a pore volume of 0.3 to 0.6 ml/g; and the crystal form of said carrier is θ form or θ, α mixed form mainly composed of θ form.