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    GASOLINE PARTICULATE FILTER
    2.
    发明申请
    GASOLINE PARTICULATE FILTER 审中-公开
    汽油颗粒过滤器

    公开(公告)号：WO2017056067A1

    公开(公告)日：2017-04-06

    申请号：PCT/IB2016/055887

    申请日：2016-09-30

    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

    Inventor： CLOWES, Lucy ,  DESTECROIX, Oliver ,  GOODWIN, John Benjamin ,  HOWARD, Michael Anthony ,  LAKADAMYALI, Fezile ,  LOCKETT, Sarah Frances ,  MILLINGTON, Paul ,  ROBSON, Chris

    IPC: F01N3/022 ,  F01N3/035

    CPC classification number: F01N3/0222 ,  F01N3/035 ,  F01N2330/06 ,  F01N2510/0682 ,  Y02T10/22

    Abstract: A catalytic wall-flow monolith filter having three-way catalytic activity for use in an emission treatment system of a positive ignition internal combustion engine comprising a porous filter substrate having a first face and a second face defining a longitudinal direction there between and first and second pluralities of channels extending in the longitudinal direction, wherein the first plurality of channels is open at the first face and closed at the second face and the channels of the first plurality of channels are defined in part by channel wall surfaces, wherein the second plurality of channels is open at the second face and closed at the first face and the channels of the second plurality of channels are defined in part by channel wall surfaces and wherein channel walls between the channel wall surfaces of the first plurality of channels and the channel wall surfaces of the second plurality of channels are porous, wherein a first on-wall coating comprising catalytic material having a layer thickness is present on at least the channel wall surfaces of the first plurality of channels, wherein the catalytic material on channel wall surfaces of the first plurality of channels comprises one or more platinum group metal selected from the group consisting of (i) rhodium (Rh) only; (ii) palladium (Pd) only; (iii) platinum (Pt) and rhodium (Rh); (iv) palladium (Pd) and rhodium (Rh); and (v) platinum (Pt), palladium (Pd) and rhodium (Rh) and a refractory metal oxide support, wherein: (i) an amount by weight of the one or more platinum group metal, per unit volume of the on-wall coating present on channel wall surfaces of the first plurality of channels varies continually along the longitudinal direction; and/or (ii) the layer thickness of the on-wall coating present on channel wall surfaces of the first plurality of channels varies continually along the longitudinal direction.

    Abstract translation: 一种用于正点火内燃机的排放处理系统中的三元催化活性的催化壁流式整体式过滤器，其特征在于包括具有第一面和第二面的多孔过滤基材， 多个通道在纵向方向上延伸，其中第一多个通道在第一面处是敞开的，并且在第二面处闭合，并且第一多个通道的通道部分地由通道壁表面限定，其中第二多个通道 通道在第二面处是开放的，并且在第一面处封闭，并且第二多个通道的通道部分地由通道壁表面限定，并且其中第一多个通道的通道壁表面和通道壁表面之间的通道壁 的第二多个通道是多孔的，其中包含催化材料的第一壁上涂层具有多孔性 至少在第一多个通道的通道壁表面上存在层厚度，其中第一多个通道的通道壁表面上的催化材料包含一种或多种选自（i）的铂族金属， 铑（Rh）; （ii）仅钯（Pd）; （iii）铂（Pt）和铑（Rh）; （iv）钯（Pd）和铑（Rh）; 和（v）铂（Pt），钯（Pd）和铑（Rh）和难熔金属氧化物载体，其中：（i）每单位体积的上述铂族金属的一种或多种铂族金属的重量， 存在于第一多个通道的通道壁表面上的壁涂层沿纵向连续变化; 和/或（ii）存在于第一多个通道的通道壁表面上的壁上涂层的层厚度沿纵向连续变化。

    POSITIVE IGNITION ENGINE AND EXHAUST SYSTEM COMPRISING THREE-WAY CATALYSED FILTER
    6.
    发明申请
    POSITIVE IGNITION ENGINE AND EXHAUST SYSTEM COMPRISING THREE-WAY CATALYSED FILTER 审中-公开
    积极点火发动机和包含三路催化过滤器的排气系统

    公开(公告)号：WO2014125296A1

    公开(公告)日：2014-08-21

    申请号：PCT/GB2014/050445

    申请日：2014-02-14

    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

    Inventor： CLOWES, Lucy ,  DESTECROIX, Oliver ,  GOODWIN, John Benjamin ,  GREENWELL, David ,  HOWARD, Michael Anthony ,  SCOTNEY, Christopher Charles John

    IPC: B01D53/94 ,  B01J35/04

    CPC classification number: B01D53/945 ,  B01D2255/102 ,  B01D2255/908 ,  B01D2255/9202 ,  B01J23/002 ,  B01J23/63 ,  B01J35/0013 ,  B01J35/023 ,  B01J35/04 ,  B01J37/0036 ,  B01J37/0215 ,  B01J2523/00 ,  F01N3/035 ,  Y02A50/2324 ,  Y02T10/22 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/824 ,  B01J2523/828

    Abstract: A positive ignition engine comprises an exhaust system for a vehicular positive ignition internal combustion engine, which exhaust system comprising a filter for filtering particulate matter from exhaust gas emitted from the vehicular positive ignition internal combustion engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the porous substrate is coated at least in part with a three-way catalyst washcoat comprising a platinum group metal and a plurality of solid particles, wherein the plurality of solid particles comprises at least one base metal oxide and at least one oxygen storage component which is a mixed oxide or composite oxide comprising cerium, wherein the mixed oxide or composite oxide comprising cerium and/or the at least one base metal oxide has a median particle size (D50) less than 1µm and wherein the platinum group metal is selected from the group consisting of: (a) platinum and rhodium; (b) palladium and rhodium; (c) platinum, palladium and rhodium; (d) palladium only; or (e) rhodium only.

    Abstract translation: 正点火发动机包括用于车辆正点火内燃机的排气系统，该排气系统包括用于从车辆正点火内燃机排放的废气中过滤颗粒物的过滤器，该过滤器包括具有入口表面的多孔基材和 出口表面，其中所述多孔基材至少部分地用包含铂族金属和多种固体颗粒的三元催化剂修补基面涂层涂覆，其中所述多个固体颗粒包含至少一种贱金属氧化物和至少一种氧 储存组分，其是包含铈的混合氧化物或复合氧化物，其中包含铈和/或至少一种贱金属氧化物的混合氧化物或复合氧化物的中值粒径（D50）小于1μm，其中铂族金属为 选自：（a）铂和铑; （b）钯和铑; （c）铂，钯和铑; （d）仅钯; 或（e）铑。

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