摘要 |
Provided are diesel exhaust components where palladium is segregated from a molecular sieve, specifically a zeolite, in a catalytic material. In the catalytic material, therefore, there are at least two layers: a palladium-containing layer that is substantially free of a molecular sieve and a hydrocarbon trap layer that comprises at least one molecular sieve and is substantially free of palladium. The palladium is provided on a high surface area, porous refractory metal oxide support. The catalytic material can further comprise a platinum component, where a minor amount of the platinum component is in the hydrocarbon trap layer, and a majority amount of the platinum component is in the palladium-containing layer. Systems and methods of using the same are also provided. |
申请人 |
BASF CATALYSTS LLC;KAZI, SHAHJAHAN, M.;DEEBA, MICHEL;NEUBAUER, TORSTEN;PUNKE, HELMUT, ALFRED;MUELLER-STACH, WOLFGANG, TORSTEN;GRUBERT, GERD;ROTH, A., STANLEY;HOKE, BARMONT, JEFFREY;SUNG, SHIANG;LI, YUEJIN;WEI, XINYI;WAN, CHUNG-ZONG |
发明人 |
KAZI, SHAHJAHAN, M.;DEEBA, MICHEL;NEUBAUER, TORSTEN;PUNKE, HELMUT, ALFRED;MUELLER-STACH, WOLFGANG, TORSTEN;GRUBERT, GERD;ROTH, A., STANLEY;HOKE, BARMONT, JEFFREY;SUNG, SHIANG;LI, YUEJIN;WEI, XINYI;WAN, CHUNG-ZONG |