Construction, method of making and method of using alumina-supported, precious metal oxidation catalysts

摘要: A catalyst construction and method of making is disclosed for treating automotive exhaust gases from a fossil fueled internal combustion engine. The comprises: (a) substrate; (b) coating on said substrate having comingled first second phases, phase comprising ceria precious metal in microscale intimacy substantially devoid separated the macroscale. phases may be particle form with (i) particles resulting codeposition CeO 2 , metal, Al O 3 an aqueous solution containing dissolved salts suspended ; (ii) salt . Alternatively, has thereon to increase its surface area, two-phase adhered partially discontinous deposition onto continuous over discontinuous exposed immediate contact constitutes not immediately phase.