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    Hydrogen-assisted integrated emission control system
    21.
    发明授权
    Hydrogen-assisted integrated emission control system 有权

    公开(公告)号：US11125133B2

    公开(公告)日：2021-09-21

    申请号：US16500340

    申请日：2018-04-03

    Applicant: BASF CORPORATION

    Inventor： Shiang Sung ,  Torsten Neubauer ,  Pushkaraj R. Patwardhan ,  Susanne Stiebels ,  Claudia Zabel

    IPC: F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28 ,  B01J21/04 ,  B01J23/58 ,  B01J23/656 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94

    Abstract: The invention provides an emission control system for treatment of an exhaust gas stream that includes an oxidation catalyst composition disposed on a substrate in fluid communication with the exhaust gas stream; at least one selective catalytic reduction (SCR) composition disposed on a substrate downstream from the oxidation catalyst composition, and a hydrogen injection article configured to introduce hydrogen into the exhaust gas stream upstream of the oxidation catalyst composition or downstream of the oxidation catalyst composition and upstream of the at least one SCR composition. The invention also provides a method of treating an exhaust gas stream, the method including receiving the exhaust gas stream into the emission control system of the invention and intermittently introducing hydrogen upstream of the oxidation catalyst article or downstream of the oxidation catalyst article and upstream stream of the SCR article.

    INTEGRATED EMISSIONS CONTROL SYSTEM
    27.
    发明申请
    INTEGRATED EMISSIONS CONTROL SYSTEM 审中-公开

    公开(公告)号：US20200032686A1

    公开(公告)日：2020-01-30

    申请号：US16591822

    申请日：2019-10-03

    Applicant: BASF CORPORATION

    Inventor： Shiang Sung ,  Torsten Neubauer ,  Pushkaraj Patwardhan

    IPC: F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F01N3/022 ,  F01N3/10 ,  B01D53/94 ,  B01D46/00 ,  B01D46/24 ,  B01J35/04 ,  B01J23/58 ,  B01J29/78 ,  B01J29/76 ,  B01J21/04 ,  B01J35/00 ,  B01J37/02 ,  B01J37/08

    Abstract: The disclosure provides a monolithic wall-flow filter catalytic article including a substrate having an aspect ratio of from about 1 to about 20, and having a functional coating composition disposed on the substrate, the functional coating composition including a first sorbent composition, an oxidation catalyst composition, and optionally, a second sorbent composition. The monolithic wall-flow filter catalytic article may be in a close-coupled position close to the engine. The disclosure further provides an integrated exhaust gas treatment system including the monolithic wall-flow filter catalytic article and may additionally include a flow-through monolith catalytic article. The flow-through monolith catalytic article includes a substrate having a selective catalytic reduction (SCR) coating composition disposed thereon. The integrated exhaust gas treatment system simplifies the traditional four-article system into a two-article Catalyzed Soot Filter (CSF) plus Selective Catalytic Reduction (SCR) CSF+SCR arrangement.

    Emissions treatment system with ammonia-generating and SCR catalysts
    29.
    发明授权
    Emissions treatment system with ammonia-generating and SCR catalysts 有权

    公开(公告)号：US08858891B2

    公开(公告)日：2014-10-14

    申请号：US14046216

    申请日：2013-10-04

    Applicant: BASF Corporation

    Inventor： Chung-Zong Wan ,  Xiaolai Zheng ,  Susanne Stiebels ,  Claudia Wendt ,  Torsten Neubauer ,  R. Samuel Boorse

    IPC: B01D50/00 ,  B01D47/00

    Abstract: Provided are emissions treatment systems for an exhaust stream having an ammonia-generating component, such as a NOx storage reduction (NSR) catalyst or a lean NOx trap (LNT) catalyst, and an SCR catalyst disposed downstream of the ammonia-generating catalyst. The SCR catalyst can be a molecular sieve having the CHA crystal structure, for example SSZ-13 or SAPO-34, which can be ion-exchanged with copper. The LNT can be layered, having an undercoat washcoat layer comprising a support material, at least one precious metal, and at least one NOx sorbent selected from the group consisting of alkaline earth elements, rare earth elements, and combinations thereof and a top washcoat layer comprising a support material, at least one precious metal, and ceria in particulate form, the top washcoat layer being substantially free of alkaline earth components. The emissions treatment system is advantageously used for the treatment of exhaust streams from diesel engines and lean burn gasoline engines.

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