Hydrogenation reaction catalyst and preparation method therefor

A hydrogenation reaction catalyst for petroleum resin;

• comprising nickel, a promoter, and a carrier,
• wherein the promoter comprises copper and sulfur,
• the carrier is at least one selected from the group consisting of silica and alumina,
• the nickel has an average crystal size of 1 nm to 10 nm and the hydrogenation reaction catalyst has an average particle size of 1 μm to 20 μm,
• a content of the nickel is in a range of 62 parts by weight to 65 parts by weight based on 100 parts by weight of the hydrogenation reaction catalyst,
• a content of the copper is in a range of 0.8 parts by weight to 1 parts by weight based on 100 parts by weight of the hydrogenation reaction catalyst,
• a mole ratio of the sulfur to the nickel is in a range of 0.02:1 to 0.2:1,
• a content of the sulfur is in a range of 2.2 parts by weight to 2.9 parts by weight based on 100 parts by weight of the hydrogenation reaction catalyst,
• the catalyst is to selectively hydrogenate an olefin by changing a relative hydrogenation rate of the olefin and an aromatic group during a hydrogenation reaction of an unsaturated hydrocarbon compound containing the aromatic group of the petroleum resin, and
• the aromatic/olefin hydrogenation ratio is 0.3-0.8.