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    Ammonia slip catalyst designed to be first in an SCR system
    1.
    发明授权
    Ammonia slip catalyst designed to be first in an SCR system 有权

    公开(公告)号：US10807081B2

    公开(公告)日：2020-10-20

    申请号：US16272002

    申请日：2019-02-11

    申请人： Johnson Matthey Public Limited Company

    发明人： Mikael Larsson ,  David Micallef

    IPC分类号： B01J23/42 ,  B01J23/44 ,  B01J29/76 ,  B01D53/94 ,  B01J21/04 ,  B01J35/00 ,  B01J35/04

    摘要： Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.

    Ammonia slip catalyst designed to be first in an SCR system
    2.
    发明授权
    Ammonia slip catalyst designed to be first in an SCR system 有权

    公开(公告)号：US10201807B2

    公开(公告)日：2019-02-12

    申请号：US15184055

    申请日：2016-06-16

    申请人： Johnson Matthey Public Limited Company

    发明人： Mikael Larsson ,  David Micallef

    IPC分类号： B01J23/42 ,  B01J23/44 ,  B01J29/76 ,  B01D53/94 ,  B01J21/04 ,  B01J35/00 ,  B01J35/04

    摘要： Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.

    AMMONIA SLIP CATALYST DESIGNED TO BE FIRST IN AN SCR SYSTEM
    8.
    发明申请
    AMMONIA SLIP CATALYST DESIGNED TO BE FIRST IN AN SCR SYSTEM 审中-公开
    AMMONIA SLIP催化剂设计在SCR系统中第一

    公开(公告)号：US20160367973A1

    公开(公告)日：2016-12-22

    申请号：US15184055

    申请日：2016-06-16

    申请人： Johnson Matthey Public Limited Company

    发明人： Mikael Larsson ,  David Micallef

    IPC分类号： B01J29/76 ,  B01J23/42 ,  B01D53/94 ,  B01J35/00 ,  B01J35/04 ,  B01J23/44 ,  B01J21/04

    CPC分类号： B01J29/763 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/9472 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2255/9037 ,  B01D2255/915 ,  B01J21/04 ,  B01J23/42 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/04 ,  Y02C20/10 ,  Y02T10/22 ,  Y02T10/24

    摘要： Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.

    摘要翻译： 具有氨滑移催化剂（ASC）的催化剂制品，其包含载体上的铂与低氨储存和第一SCR催化剂的共混物，以及第二催化剂，例如柴油氧化催化剂，柴油放热催化剂（DEC），NOx 吸收剂，选择性催化还原/被动NOx吸附器（SCR / PNA），冷启动催化剂（CSC）或三元催化剂（TWC）。 催化剂制品还可以含有一种或两种另外的SCR催化剂。 催化剂可以以各种构型中的一种存在。 催化制品可用于废气中NOx的选择性催化还原（SCR）和减少氨滑移量。 还描述了在SCR过程中使用催化制品的方法，其中氨的滑移量减少。

    Ammonia slip catalyst designed to be first in an SCR system
    10.
    发明授权
    Ammonia slip catalyst designed to be first in an SCR system 有权

    公开(公告)号：US10518255B2

    公开(公告)日：2019-12-31

    申请号：US16272002

    申请日：2019-02-11

    申请人： Johnson Matthey Public Limited Company

    发明人： Mikael Larsson ,  David Micallef

    IPC分类号： B01J23/42 ,  B01J23/44 ,  B01J29/76 ,  B01D53/94 ,  B01J21/04 ,  B01J35/00 ,  B01J35/04

    摘要： Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.