Patent ID: 6720284
Filing Date: 2004-04-13
Classification: B01D,B01J,C01B,H01M,Y02E,Y02P

Abstract:
Process for producing an Au/Fe2O3 catalyst material made from a particulate, co-catalytically active Fe2O3 support material having metallic Au clusters deposited on the Fe2O3 support material, said clusters having a diameter of less than 4.5 nm, said method comprising the following steps:a) reacting a water-soluble Fe(III) salt in an aqueous medium with a base, thereby forming a moist hydroxide gel; b) impregnating the moist hydroxide gel with a solution of a water-soluble Au compound to deposit complexed Au clusters on the surface of the hydroxide gel, thereby forming a suspension of reaction products; c) removing water from the suspension of reaction products, thereby forming a dried reaction product; and d) subjecting the dried reaction product to calcining at temperatures between 350 and 700Â° C.