Method for directly preparing palladium-carbon catalyst from waste palladium-carbon catalyst

The invention discloses a method for directly preparing a palladium-carbon catalyst from a waste palladium-carbon catalyst. The method comprises the following steps: processing the waste palladium-carbon catalyst by using alkali solutions, performing filtration and washing until the waste palladium-carbon catalyst is in a neutral state, and performing pulp conditioning and stirring; adding an appropriate amount of palladium chloride into a hydrochloric acid solution to obtain a mixture, heating and dissolving the mixture, and then adding a small amount of additives to obtain a palladium-containing solution, wherein a structure of the additive is shown in the formula depicted in the description; adding the palladium-containing solution into waste catalyst slurry subjected to alkali preprocessing; and performing adsorption, reduction, filtration and washing to obtain a primarily activated palladium-carbon catalyst. Because a special active ingredient is adopted in impregnation liquid, sothat immobilization and