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    EMISSIONS TREATMENT SYSTEMS WITH TWC CATALYSTS AND SCR-HCT CATALYSTS
    2.
    发明专利
    EMISSIONS TREATMENT SYSTEMS WITH TWC CATALYSTS AND SCR-HCT CATALYSTS 未知

    公开(公告)号：CA2961232A1

    公开(公告)日：2016-04-28

    申请号：CA2961232

    申请日：2015-10-21

    Applicant: BASF CORP

    Inventor： ZHENG XIAOLAI ,  JI CHUNXIN ,  XUE WEN-MEI ,  SCHLADT MATTHEW J ,  WANG XIAOMING ,  LUO TIAN ,  DEEBA MICHEL ,  WASSERMANN KNUT

    IPC: B01J29/85 ,  B01D53/92 ,  B01J29/40 ,  F01N3/20

    Abstract: An emissions treatment system for an exhaust stream of an internal combustion engine including hydrocarbons, carbon monoxide, and nitrogen oxides is provided. The disclosed system can include an exhaust conduit in fluid communication with the internal combustion engine via an exhaust manifold; a first three-way conversion catalyst (TWC-1) located downstream of the internal combustion engine in the exhaust conduit; an SCR-HCT catalyst comprising a selective catalytic reduction catalyst and a hydrocarbon trap downstream of the TWC-1 in the exhaust conduit; and a third catalyst downstream of the SCR-HCT combination in the exhaust conduit, the third catalyst comprising a platinum group metal (PGM) e.g., in an amount effective to oxidize hydrocarbons. Methods of making and using such systems and components thereof are also provided.

    EMISSIONS TREATMENT SYSTEMS WITH TWC CATALYSTS AND SCR-HCT CATALYSTS
    3.
    发明专利
    EMISSIONS TREATMENT SYSTEMS WITH TWC CATALYSTS AND SCR-HCT CATALYSTS 未知

    公开(公告)号：ZA201703326B

    公开(公告)日：2019-07-31

    申请号：ZA201703326

    申请日：2017-05-15

    Applicant: BASF CORP

    Inventor： ZHENG XIAOLAI ,  JI CHUNXIN ,  XUE WEN-MEI ,  SCHLADT MATTHEW J ,  WANG XIAOMING ,  LUO TIAN ,  DEEBA MICHEL ,  WASSERMANN KNUT

    Abstract: An emissions treatment system for an exhaust stream of an internal combustion engine including hydrocarbons, carbon monoxide, and nitrogen oxides is provided. The disclosed system can include an exhaust conduit in fluid communication with the internal combustion engine via an exhaust manifold; a first three-way conversion catalyst (TWC-1) located downstream of the internal combustion engine in the exhaust conduit; an SCR-HCT catalyst comprising a selective catalytic reduction catalyst and a hydrocarbon trap downstream of the TWC-1 in the exhaust conduit; and a third catalyst downstream of the SCR-HCT combination in the exhaust conduit, the third catalyst comprising a platinum group metal (PGM) e.g., in an amount effective to oxidize hydrocarbons. Methods of making and using such systems and components thereof are also provided.

    EXHAUST GAS TREATMENT SYSTEM
    4.
    发明专利
    EXHAUST GAS TREATMENT SYSTEM 未知

    公开(公告)号：CA2972861A1

    公开(公告)日：2016-09-29

    申请号：CA2972861

    申请日：2016-03-24

    Applicant: BASF CORP

    Inventor： YANG XIAOFAN ,  XUE WEN-MEI ,  HOCHMUTH JOHN K ,  SCHLADT MATTHEW J ,  LI YUEJIN

    IPC: B01D53/94 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J29/04 ,  B01J29/85 ,  F01N3/20

    Abstract: Described are exhaust gas treatment systems for treatment of a gasoline engine exhaust gas stream containing NOx, particulate matter, and sulfur. The exhaust gas treatment system comprises: one or more catalytic articles selected from a three-way conversion catalyst (TWC), a lean NOx trap (LNT), and an integrated LNT-TWC; a platinum-containing catalytic article downstream from the one or more catalytic articles; and one or more selective catalytic reduction (SCR) catalytic articles immediately downstream from the platinum-containing catalytic article, the one or more SCR catalytic articles including a molecular sieve. The system stabilizes the SCR catalytic article from poisoning by sulfur.

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