METHOD FOR PRODUCING PALLADIUM-GOLD LOADED CATALYST FOR VINYL ACETATE SYNTHESIS

摘要

The present invention provides a technique that is capable of easily adjusting the loading positions of gold and palladium in a VAM catalyst by means of a method for producing a palladium-gold loaded catalyst for vinyl acetate synthesis, which is characterized by comprising: a step for obtaining a palladium-gold immobilized spherical porous molded carrier by impregnating a spherical porous molded carrier, which is formed from an inorganic oxide, with a mixed aqueous solution that contains a palladium precursor serving as a catalytically active species and a gold precursor serving as a promoter component, and by subsequently impregnating the spherical porous molded carrier with an alkaline aqueous solution, thereby water-insolubilizing the palladium precursor and the gold precursor within the spherical porous molded carrier; and a subsequent step for adjusting the moisture content of the palladium-gold immobilized spherical porous molded carrier.