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    MULTI-ZONED CATALYST COMPOSITIONS
    1.
    发明申请
    MULTI-ZONED CATALYST COMPOSITIONS 审中-公开
    多区催化剂组合物

    公开(公告)号：WO2010121236A2

    公开(公告)日：2010-10-21

    申请号：PCT/US2010031551

    申请日：2010-04-19

    Applicant: BASF CORP ,  CHEN SHAU-LIN F ,  ANDERSON DENNIS R

    Inventor： CHEN SHAU-LIN F ,  ANDERSON DENNIS R

    IPC: B01J35/04 ,  B01D53/94 ,  B01J23/38 ,  B01J29/44 ,  F01N3/20

    CPC classification number: F01N3/2828 ,  F01N3/08 ,  F01N3/0814 ,  F01N3/0835 ,  F01N3/0864 ,  F01N2250/12 ,  F01N2330/06 ,  F01N2330/30 ,  F01N2330/60 ,  F01N2510/0682 ,  F01N2510/0684

    Abstract: Exhaust gas treatment substrates, and systems and methods including the same are provided. Catalyst substrates having flow properties where in configuring an outer, peripheral zone, more exhaust gas flows through a central zone as compared to the outer, peripheral zone. The outer, peripheral zone can have a trapping or adsorbing material on surfaces of its passages, or it can have a longer axial length as compared to the inner zone, or its passages can have smaller openings as compared to the inner zone. In one embodiment, an overcoat containing a trapping material such as a hydrocarbon trap is applied to an inlet end. In another embodiment, catalyst having an oxygen storage component is applied to an outlet end.

    Abstract translation: 提供废气处理基板，以及包括其的系统和方法。 具有流动特性的催化剂衬底，其中在构造外部周边区域时，与外部周边区域相比，更多的废气流过中心区域。 外部周边区域可以在其通道的表面上具有捕获或吸附材料，或者与内部区域相比可以具有更长的轴向长度，或者与内部区域相比，其通道可以具有较小的开口。 在一个实施方案中，将包含捕获材料如烃阱的外涂层施加到入口端。 在另一个实施方案中，将具有储氧组分的催化剂施加到出口端。

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