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    Multilayered Catalyst Compositions
    2.
    发明申请
    Multilayered Catalyst Compositions 有权
    多层催化剂组合物

    公开(公告)号：US20090041643A1

    公开(公告)日：2009-02-12

    申请号：US11836397

    申请日：2007-08-09

    申请人： Michel Deeba ,  Stephan Siemund ,  Xinyi Wei

    发明人： Michel Deeba ,  Stephan Siemund ,  Xinyi Wei

    IPC分类号： B01D53/34

    CPC分类号： F01N3/2803 ,  B01D53/9445 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9025 ,  B01D2255/908 ,  F01N2370/02 ,  F01N2510/0682 ,  Y02A50/2341 ,  Y02T10/22

    摘要： A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also provided. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone.

    摘要翻译： 公开了具有同时催化烃和一氧化碳氧化和氮氧化物还原的能力的层状三向转化催化剂。 还提供了发动机废气处理系统及其使用方法。 在一个或多个实施方案中，负载在载体上的催化剂具有三层，其中至少两层被划分为具有存储在上游区中的储氧组分，其量小于存在于 下游区。

    Multilayered Catalyst Compositions
    3.
    发明申请
    Multilayered Catalyst Compositions 有权
    多层催化剂组合物

    公开(公告)号：US20100104491A1

    公开(公告)日：2010-04-29

    申请号：US12609622

    申请日：2009-10-30

    申请人： Michel Deeba ,  Stephan Siemund ,  Xinyi Wei ,  Stefan Kotrel ,  Knut Wassermann ,  Glenn Svoboda ,  Harold Rabinowitz

    发明人： Michel Deeba ,  Stephan Siemund ,  Xinyi Wei ,  Stefan Kotrel ,  Knut Wassermann ,  Glenn Svoboda ,  Harold Rabinowitz

    IPC分类号： B01D53/56 ,  B01D53/86

    CPC分类号： B01D53/945 ,  B01D53/9472 ,  B01D53/9477 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9025 ,  B01D2255/908 ,  F01N3/2803 ,  F01N2370/02 ,  F01N2510/0682 ,  F01N2510/0684 ,  Y02T10/22

    摘要： A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also provided. The catalytic material can be provided in layers such that a larger amount of oxygen storage component is provided in a downstream zone as compared to an upstream zone. For example, the upstream zone can be configured to have one, two, or three layers, and the downstream zone can be independently configured to have one, two, or three layers. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone.

    摘要翻译： 公开了具有同时催化烃和一氧化碳氧化和氮氧化物还原的能力的层状三向转化催化剂。 还提供了发动机废气处理系统及其使用方法。 催化材料可以分层提供，使得与上游区域相比，在下游区域中提供更大量的储氧组分。 例如，上游区域可以被配置为具有一个，两个或三个层，并且下游区域可以被独立地配置成具有一个，两个或三个层。 在一个或多个实施方案中，负载在载体上的催化剂具有三层，其中至少两层被划分为具有存储在上游区中的储氧组分，其量小于存在于 下游区。

    Enhanced NOx trap having increased durability
    4.
    发明授权
    Enhanced NOx trap having increased durability 失效
    增强的NOx捕集器具有增加的耐久性

    公开(公告)号：US06727202B2

    公开(公告)日：2004-04-27

    申请号：US09933586

    申请日：2001-08-21

    申请人： Michel Deeba ,  Shau-Lin F. Chen ,  John K. Hochmuth ,  Patrick L. Burk ,  Xinyi Wei

    发明人： Michel Deeba ,  Shau-Lin F. Chen ,  John K. Hochmuth ,  Patrick L. Burk ,  Xinyi Wei

    IPC分类号： B01J3702

    CPC分类号： F01N3/0842 ,  B01D53/9431 ,  B01J23/34 ,  B01J23/6562 ,  B01J23/92 ,  B01J37/0201 ,  B01J37/0242 ,  B01J37/0248 ,  F01N3/0814 ,  F01N2250/12 ,  F01N2370/02 ,  F01N2370/22 ,  Y02C20/10 ,  Y02T10/24

    摘要： A catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated with periodic alternations between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. The trap comprises a catalytic trap material and a refractory carrier member on which the catalytic trap material is disposed. The catalytic trap material comprises: (i) a refractory metal oxide support; (ii) a catalytic component effective for promoting the reduction of NOx under stoichiometric or rich conditions; and (iii) a NOx sorbent effective for adsorbing the NOx under lean conditions and desorbing and reducing the NOx to nitrogen under stoichiometric or rich conditions. The NOx sorbent comprises a metal oxide selected from the group consisting of one or alkali metal oxides, alkaline earth metal oxides and mixtures of one or more alkali metal oxides and alkaline earth metal oxides. The manganese component is selected from the group consisting of: (1) a manganese oxide, (2) a mixed oxide of manganese and a transition metal and/or a rare earth metal, (3) a compound of an alkali metal and a manganese oxide, (4) a compound of an alkaline earth metal and a manganese oxide and (5) mixtures of the foregoing oxides and compounds.

    摘要翻译： 设置在内燃机的排气通道中的催化捕集器，其在稀薄和化学计量或富含条件之间的周期性变化下操作，以减少由发动机产生的废气流中的NOx。 捕集器包括催化捕集材料和其上设置有催化捕集材料的耐火载体构件。 催化捕集材料包括：（i）难熔金属氧化物载体; （ii）在化学计量或富含条件下有效促进NOx还原的催化组分; 和（iii）有效地在稀薄条件下吸附NOx的NOx吸附剂，并且在化学计量或富含条件下将NOx解吸并还原成氮。 NOx吸附剂包括选自一种或碱金属氧化物，碱土金属氧化物和一种或多种碱金属氧化物和碱土金属氧化物的混合物的金属氧化物。 锰成分选自：（1）锰氧化物，（2）锰与过渡金属和/或稀土金属的混合氧化物，（3）碱金属和锰的化合物 氧化物，（4）碱土金属和氧化锰的化合物和（5）上述氧化物和化合物的混合物。