Nickel catalyst for C5 petroleum resin hydrogenation as well as preparation method and application thereof

The invention discloses a nickel catalyst for C5 petroleum resin hydrogenation. The nickel catalyst comprises an activated carbon carrier, Ni nano-particles attached to the activated carbon carrier, and amorphous alloy nano-particles of Ni and a metal auxiliary agent, wherein the amorphous alloy nano-particles are attached to the activated carbon carrier. The weight percentage of Ni in the catalyst is 3%-8%, the weight percentage of the metal auxiliary agent is 0.1%-0.5%, and the metal auxiliary agent is zinc and/or cobalt. The invention also discloses a preparation method and application of the catalyst. The nickel catalyst disclosed by the invention has the advantages that the main active component nickel is modified by adding one or two of the auxiliary agent Zn and Co, so that nickel crystal lattices distort, deform and become thin, the areas of crystal faces are effectively enlarged, and the conversion rate and the selectivity of the catalyst are increased; in addition, due to the added metal additives, aggregation and enlargement of nickel crystal particles can be hindered, the stability of microscopic morphology of the catalyst is maintained, and the service life of the catalyst is effectively prolonged.