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    SMALL ENGINE LAYERED CATALYST ARTICLE AND METHOD OF MAKING
    1.
    发明申请
    SMALL ENGINE LAYERED CATALYST ARTICLE AND METHOD OF MAKING 审中-公开
    小引擎分层催化剂制品和制造方法

    公开(公告)号：WO2011056768A3

    公开(公告)日：2011-10-06

    申请号：PCT/US2010055048

    申请日：2010-11-02

    Applicant: BASF CORP ,  TRAN PASCALINE H ,  GALLIGAN MICHAEL P ,  ALIVE KESHAVARAJA ,  LIU YE

    Inventor： TRAN PASCALINE H ,  GALLIGAN MICHAEL P ,  ALIVE KESHAVARAJA ,  LIU YE

    IPC: B01J23/46 ,  B01D53/94 ,  B01J23/44 ,  B01J35/02 ,  B01J37/025

    CPC classification number: B01J37/0244 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/9022 ,  B01D2255/908 ,  B01J21/066 ,  B01J23/63 ,  B01J37/0201 ,  B01J37/0219 ,  B01J37/0248 ,  B01J37/04 ,  Y02T10/22 ,  Y10S502/52712 ,  Y10S502/52713

    Abstract: Catalyst articles comprising substantially only a palladium precious metal component in a first catalytic layer and a rhodium component in a second catalytic layer and related methods of preparation and use are disclosed. Also disclosed is a catalyst article comprising a first layer formed on a carrier substrate, wherein the first layer comprises a refractory metal oxide and has a surface that is substantially uniform; a second layer formed on the first layer, wherein the second layer comprises i) an oxygen storage component that is about 50-90% by weight of the second layer and ii) a palladium component in an amount of about 2-5% by weight of the second layer, wherein the palladium component is substantially the only platinum group metal component, and a palladium-free third layer comprising a rhodium component supported on a thermostable oxygen storage component which is about 80-99% by weight of the second layer. One or more improved properties are exhibited by the catalyst article.

    Abstract translation: 公开了基本上仅包含第一催化层中的钯贵金属组分和第二催化层中的铑组分的催化剂制品以及相关的制备和使用方法。 还公开了一种催化剂制品，其包含在载体基材上形成的第一层，其中第一层包含难熔金属氧化物并具有基本均匀的表面; 形成在所述第一层上的第二层，其中所述第二层包含i）约50-90重量％的第二层的储氧组分和ii）约2-5重量％的钯组分 其中钯组分基本上是唯一的铂族金属组分，以及不含钯的第三层，其包含承载在热稳定性储氧组分上的铑组分，其占第二层重量的约80-99％。 催化剂制品表现出一种或多种改进的性能。

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