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    EMISSIONS TREATMENT SYSTEMS WITH TWC CATALYSTS AND SCR-HCT CATALYSTS
    6.
    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.

    COMPOSITES OF MIXED METAL OXIDES FOR OXYGEN STORAGE
    7.
    发明专利
    COMPOSITES OF MIXED METAL OXIDES FOR OXYGEN STORAGE 未知

    公开(公告)号：SG11201408381QA

    公开(公告)日：2015-01-29

    申请号：SG11201408381Q

    申请日：2013-06-13

    Applicant: BASF CORP

    Inventor： WANG XIAOMING ,  WASSERMANN KNUT

    IPC: C01F17/00 ,  B01J23/44 ,  C01F7/02

    Abstract: Provided are composites of mixed metal oxides comprising: a ceria-zirconia-alumina composite, wherein the alumina is present in an amount in the range of 1 to less than 30% by weight of the composite and the mixed metal oxide composite has a ceria reducibility of at least 50% after 12 hours of hydrothermal aging at 1050° C. In preparation thereof, a ceria-zirconia solid solution can optionally further comprise at least one rare earth oxide other than ceria and the alumina may be formed by using a colloidal alumina precursor. Methods of making and using these composites are also provided.

    MOLECULAR SIEVE CATALYST COMPOSITIONS, CATALYTIC COMPOSITES, SYSTEMS, AND METHODS
    9.
    发明专利
    MOLECULAR SIEVE CATALYST COMPOSITIONS, CATALYTIC COMPOSITES, SYSTEMS, AND METHODS 未知

    公开(公告)号：CA2952437A1

    公开(公告)日：2015-12-23

    申请号：CA2952437

    申请日：2015-06-17

    Applicant: BASF CORP

    Inventor： YANG XIAOFAN ,  HOCHMUTH JOHN K ,  XUE WEN-MEI ,  WANG XIAOMING ,  CAUDLE MATTHEW TYLER ,  MOINI AHMAD ,  HOLLOBAUGH DUSTIN O ,  FU QI ,  BREEN MICHAEL

    IPC: B01J29/06 ,  B01J29/16 ,  B01J29/20

    Abstract: Described is a selective catalytic reduction catalyst comprising a zeolitic framework material of silicon and aluminum atoms, wherein a fraction of the silicon atoms are isomorphously substituted with a tetravalent metal. The catalyst can include a promoter metal such that the catalyst effectively promotes the reaction of ammonia with nitrogen oxides to form nitrogen and H20 selectively over a temperature range of 150 to 650 °C. In another aspect, described is a selective catalytic reduction composite comprising an SCR catalyst material and an ammonia storage material comprising a transition metal having an oxidation state of IV. The SCR catalyst material promotes the reaction of ammonia with nitrogen oxides to form nitrogen and H20 selectively over a temperature range of 150 °C to 600 °C, and the SCR catalyst material is effective to store ammonia at temperatures of 400 °C and above. A method for selectively reducing nitrogen oxides, and a method for simultaneously selectively reducing nitrogen oxide and storing ammonia are also described. Additionally, an exhaust gas treatment system is also described.

    COMPOSITES OF MIXED METAL OXIDES FOR OXYGEN STORAGE
    10.
    发明专利
    COMPOSITES OF MIXED METAL OXIDES FOR OXYGEN STORAGE 未知

    公开(公告)号：CA2876863A1

    公开(公告)日：2013-12-19

    申请号：CA2876863

    申请日：2013-06-13

    Applicant: BASF CORP

    Inventor： WANG XIAOMING ,  WASSERMANN KNUT

    IPC: C01F17/00 ,  B01J23/44 ,  C01F7/02

    Abstract: Provided are composites of mixed metal oxides comprising: a ceria-zirconia-alumina composite, wherein the alumina is present in an amount in the range of 1 to less than 30% by weight of the composite and the mixed metal oxide composite has a ceria reducibility of at least 50% after 12 hours of hydrothermal aging at 1050°C. In preparation thereof, a ceria- zirconia solid solution can optionally further comprise at least one rare earth oxide other than ceria and the alumina may be formed by using a colloidal alumina precursor. Methods of making and using these composites are also provided.

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