公开(公告)号：EP2948653A4

公开(公告)日：2016-08-24

申请号：EP14742867

申请日：2014-01-24

申请人： BASF CORP ,  BASF SE

发明人： ARNOLD MIRKO ,  KOTREL STEFAN ,  SIANI ATTILIO ,  SEIMUND STEFAN ,  SCHMITZ THOMAS ,  RABE BURKHARD ,  GRAMICCIONI GARY A ,  SEEL OLIVER ,  NEUBAUER TORSTEN ,  WASSERMANN KNUT

IPC分类号： F01N3/10 ,  B01J23/44 ,  B01J23/46 ,  F01N3/20

CPC分类号： B01J23/63 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2258/014 ,  B01J35/0006 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1061 ,  B01J37/0244 ,  B01J37/0248 ,  F01N3/101 ,  F01N2510/0684 ,  Y02A50/2324 ,  Y02T10/22

摘要： Provided are catalyst composites whose catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. The catalyst composites have a two-metal layer on a carrier, the two-metal layer comprising a rhodium component supported by a first support comprising a refractory metal oxide component or a first ceria-zirconia composite; a palladium component supported by a second support comprising a second ceria-zirconia composite; one or more of a promoter, stabilizer, or binder; wherein the amount of the total of the first and second ceria-zirconia composites in the two-metal layer is equal to or greater than the amount of the refractory metal oxide component. Methods of making and using the same are also provided.