Palladium-based supported hydrogenation catalyst, preparation method and application thereof

摘要

The present invention relates to a palladium-based supported hydrogenation catalyst, a method for producing the same, and applications. The catalyst is an Al ₂ O ₃ containing carrier impregnated with an organic solution containing a bipyridine derivative having a hydroxy group, optionally dried, and then containing palladium ions as the main active ingredient and M ⁿ⁺ ions as the auxiliary active ingredient. As a mixed solution, wherein M is impregnated with a mixed solution selected from silver (Ag), gold (Au), nickel (Ni), lead (Pb) and copper (Cu), and then selectively dried, It is produced by a method of obtaining a catalyst by calcining. The manufacturing method provided by the present invention allows Pd atoms and M atoms to be highly uniformly dispersed on the carrier, thereby overcoming the adverse effects of the surface tension and solvation effect of the impregnating liquid on the dispersibility of the active ingredient. The palladium-based supported hydrogenation catalyst provided by the present invention has excellent hydrogenation activity, ethylene selectivity and anti-coking performance, and can be used in the selective hydrogenation process of the C2 fraction.