Production method of highly dispersed supported palladium catalyst suitable for core material for core-shell catalyst

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a palladium catalyst supported in a highly dispersed manner which is suitable for a core material for a core-shell catalyst.SOLUTION: There is provided a method for a palladium catalyst, the method comprising: a first supporting step of impregnating and supporting a palladium raw material on a catalyst carrier to reduce into palladium particles by gas phase reduction; and a second supporting step of additionally supporting the palladium raw material to support palladium to a predetermined amount of a supported palladium by liquid phase reduction. The palladium catalyst produced by this method can be applied to a core material for a core-shell catalyst in which palladium particles having an average particle diameter of 3 nm or less and a standard deviation of 1 nm or less are supported in a highly dispersed manner.