Method for selective hydrogenation

A method for selective hydrogenation comprising the steps of:

• dispersing two or more kinds of hydrogenation catalysts in a solvent to prepare a catalyst slurry;
• and
• mixing the catalyst slurry, a hydrogenation subject, and hydrogen gas to conduct a hydrogenation process,
• wherein the hydrogenation subject is petroleum resin,
• wherein the hydrogenation catalysts comprise a selective hydrogenation catalyst and a non-selective hydrogenation catalyst,
• wherein the selective hydrogenation catalyst is one in which nickel and a cocatalyst are supported on a carrier, and the cocatalyst comprises sulfur and copper, and
• wherein the non-selective hydrogenation catalyst comprises nickel (Ni).