CATALYST SYSTEM FOR GENERATING CARBON MONOXIDE FOR USE WITH AUTOMOTIVE NOX ADSORBER CATALYSTS
摘要
<p>The present invention provides a catalyst system that may be used to regenerate NOx adsorber catalysts. It also provides methods for using these catalysts. According to the present invention, hydrocarbons are introduced into an exhaust gas stream upstream of a metal ion exchanged zeolite catalyst to generate CO. The metal ion exchanged zeolite catalyst is preferably a Cu-ZSM-5 catalyst that has a high loading of copper. The hydrocarbons are oxidized to carbon monoxide, and the carbon monoxide is then exposed to a NOx adsorber catalyst, which facilitates regeneration of that catalyst.</p>
申请公布号
WO2004110597(A1)
申请公布日期
2004.12.23
申请号
WO2004EP06440
申请日期
2004.06.15
申请人
UMICORE AG & CO. KG;CROCKER, MARC;LEPRINCE, THIERRY;MATSUMOTO, TAKESHI;NAKAENE, TAKUJI