METHOD FOR RECOVERING PALLADIUM

摘要

PROBLEM TO BE SOLVED: To refine diammine palladium chloride at high purity and to recover palladium having high purity in a method for obtaining palladium by reducing diammine palladium chloride. SOLUTION: Diammine palladium chloride is dissolved into ammonia water, an oxidizer such as hydrogen peroxide is added by one equivalent of a theoretical amount at least required for converting bivalent Pt dissolved in the solution into tetravalent Pt or more, next, hydrochloric acid is added thereto, and palladium in the solution is precipitated and recovered as diammine palladium chloride to form the raw material for obtaining palladium having high purity.