公开(公告)号：EP3157671A4

公开(公告)日：2018-02-14

申请号：EP15808974

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: B01J29/89 ,  B01D53/94 ,  B01J29/06 ,  B01J29/16 ,  B01J29/20 ,  B01J37/02

CPC classification number: B01J37/0215 ,  B01D53/9418 ,  B01D53/9436 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/104 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20723 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/911 ,  B01J29/763 ,  B01J29/89 ,  B01J35/002 ,  B01J35/04 ,  B01J37/0246 ,  B01J2229/183 ,  B01J2229/186

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.

公开(公告)号：EP3188833A4

公开(公告)日：2018-05-16

申请号：EP15838592

申请日：2015-08-28

Applicant: BASF CORP

Inventor： WANG XIAOMING ,  DEEBA MICHEL ,  ZHENG XIAOLAI ,  TITLBACH SVEN ,  SUNDERMANN ANDREAS ,  SCHUNK STEPHAN ANDREAS

IPC: B01J21/06 ,  B01D53/94 ,  B01J23/00 ,  B01J23/10 ,  B01J23/42 ,  B01J23/46 ,  B01J23/58 ,  B01J23/63 ,  B01J32/00 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08 ,  F01N3/20

CPC classification number: F01N3/101 ,  B01D53/945 ,  B01D2255/102 ,  B01D2255/1025 ,  B01D2255/204 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20776 ,  B01D2255/30 ,  B01J21/066 ,  B01J23/002 ,  B01J23/10 ,  B01J23/46 ,  B01J23/464 ,  B01J23/58 ,  B01J23/63 ,  B01J35/1014 ,  B01J37/0018 ,  B01J37/0201 ,  B01J37/0215 ,  B01J37/0219 ,  B01J37/0225 ,  B01J37/0236 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/03 ,  B01J37/031 ,  B01J37/04 ,  B01J37/08 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/25 ,  B01J2523/31 ,  B01J2523/48 ,  B01J2523/824 ,  B01J2523/3706 ,  B01J2523/47 ,  B01J2523/822

Abstract: Composites of mixed metal oxides for an exhaust gas purifying catalyst comprise the following co-precipitated materials by weight of the composite: zirconia in an amount in the range of 55-99%; titania in an amount in the range of 1-25%; a promoter and/or a stabilizer in an amount in the range of 0-20%. These composites are effective as supports for platinum group metals (PGMs), in particular rhodium.

公开(公告)号：EP3209870A4

公开(公告)日：2018-07-25

申请号：EP15851907

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: F01N3/08 ,  B01J29/40 ,  B01J29/85 ,  F01N3/20

CPC classification number: B01D53/945 ,  B01D53/9418 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2255/502 ,  B01D2255/9022 ,  B01D2255/912 ,  B01D2255/9207 ,  B01J23/56 ,  B01J23/63 ,  B01J29/005 ,  B01J29/40 ,  B01J29/46 ,  B01J29/7007 ,  B01J29/76 ,  B01J29/7615 ,  B01J29/763 ,  B01J29/80 ,  B01J29/85 ,  B01J35/0006 ,  B01J37/0244 ,  B01J37/0246 ,  B01J2523/00 ,  Y02T10/24 ,  B01J2523/25 ,  B01J2523/31 ,  B01J2523/37 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/824 ,  B01J2523/822 ,  B01J2523/828

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.

公开(公告)号：EP2861533A4

公开(公告)日：2016-02-17

申请号：EP13805062

申请日：2013-06-13

Applicant: BASF CORP

Inventor： WANG XIAOMING ,  WASSERMANN KNUT

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

CPC classification number: B01J23/63 ,  B01D53/945 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/908 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1047 ,  B01J37/0215 ,  B01J37/031 ,  B01J37/10 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/36 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/31 ,  B01J2523/3725 ,  B01J2523/3718

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.