Process for purifying exhaust gases
    5.
    发明授权
    Process for purifying exhaust gases 失效
    废气净化工艺

    公开(公告)号:US5762892A

    公开(公告)日:1998-06-09

    申请号:US864894

    申请日:1997-05-29

    IPC分类号: B01D53/94 B01J23/58 B01J23/63

    摘要: A catalyst for purifying carbon monoxide, hydrocarbons and nitrogen oxides in exhaust gases at the stoichiometric point or in oxygen-rich atmosphere, is disclosed, and it includes a porous support, at least one noble metal catalyst ingredient loaded on the porous support, and selected from the group consisting of platinum, palladium and rhodium, and at least one NO.sub.X adsorbent loaded on the porous support, selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements, and having an average particle diameter falling in a range of from 0.1 to 20 micrometers. A process for purifying, by bringing the exhaust gases into contact with the catalyst, is also disclosed.

    摘要翻译: 公开了用于在化学计量点或富氧气氛中净化废气中的一氧化碳,烃和氮氧化物的催化剂,其包括多孔载体,至少一种负载在多孔载体上的贵金属催化剂成分,并且选择 从由铂,钯和铑组成的组中,以及负载在多孔载体上的至少一种NO x吸附剂,其选自碱金属,碱土金属和稀土元素,平均粒径落入 范围为0.1至20微米。 还公开了通过使废气与催化剂接触来净化的方法。