发明名称 CATALYST SYSTEM FOR EXHAUST GAS PURIFICATION UTILIZING BASE METALS, AND CONTROLLING METHOD THEREFOR
摘要 A catalyst system for exhaust gas purification which comprises a first-stage base metal catalyst located upstream and a second-stage base metal catalyst located downstream, wherein the first-stage base metal catalyst comprises at least one oxide support selected from the group consisting of alumina, ceria, zirconia, yttria, and titania and Cu metal and/or a Cu oxide supported thereon, and in cases where the amount of NOx in the exhaust gas has become or exceeded an NOx criterion, the state of the exhaust gas is switched from slightly rich to rich.
申请公布号 EP2815812(A4) 申请公布日期 2015.04.08
申请号 EP20120868908 申请日期 2012.11.09
申请人 TOYOTA JIDOSHA KABUSHIKI KAISHA 发明人 NOBUKAWA, TAKESHI
分类号 B01J29/072;B01D53/94;F01N3/08;F01N3/10;F01N3/22;F01N3/24 主分类号 B01J29/072
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