<p>Catalyst articles comprising palladium and related methods of preparation and use are disclosed. Disclosed is a catalyst article comprising a first catalytic layer formed on a substrate, wherein the first catalytic layer comprises palladium impregnated on a ceria-free oxygen storage component and platinum impregnated on a refractory metal oxide, and a second catalytic layer formed on the first catalytic layer comprising platinum and rhodium impregnated on a ceria-containing oxygen storage component. The palladium component of the catalyst article is present in a higher proportion relative to the other platinum group metal components. The catalyst articles provide improved conversion of carbon monoxide in exhaust gases, particularly under rich engine operating conditions.</p>
申请公布号
WO2011109676(A3)
申请公布日期
2011.12.22
申请号
WO2011US27120
申请日期
2011.03.04
申请人
BASF CORPORATION;LIU, XINSHENG;LIU, YE;TRAN, PASCALINE, HARRISON;ALIVE, KESHAVARAJA;GALLIGAN, MICHAEL, P.
发明人
LIU, XINSHENG;LIU, YE;TRAN, PASCALINE, HARRISON;ALIVE, KESHAVARAJA;GALLIGAN, MICHAEL, P.