Hydrogenation catalyst and preparation method thereof

The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a preparation method of a palladium-molybdenum hydrogenation catalyst using nickel-containing alumina as a carrier. The nickel-zinc hydrogenation catalyst contains active components palladium and molybdenum, the nickel-containing alumina is used as the carrier, a precursor of the nickel-containingalumina carrier is nickel-containing pseudo-boehmite, and the preparation process of the nickel-containing pseudo-boehmite includes acid-base neutralization and gelling processes. A specific carrier is used in the catalyst provided by the invention, and the specific carrier has the advantages that the nickel and the pseudo-boehmite can be organically combined, a specific crystal form of the nickel-containing alumina is formed, a good regulation effect on a pore structure and acidity of the carrier is provided, and the active components in the prepared catalyst are highly dispersed. The palladium-molybdenum hydrogenati