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    ABGASREINIGUNGSANLAGE FÜR MAGERMOTOREN UND VERFAHREN ZUM BETREIBEN DER ANLAGE
    12.
    发明公开
    ABGASREINIGUNGSANLAGE FÜR MAGERMOTOREN UND VERFAHREN ZUM BETREIBEN DER ANLAGE 审中-公开
    排放控制系统用于操作系统的精益引擎和方法

    公开(公告)号：EP2104782A1

    公开(公告)日：2009-09-30

    申请号：EP07857042.1

    申请日：2007-12-21

    Applicant: Umicore AG & Co. KG

    Inventor： ECKHOFF, Stephan ,  GOEBEL, Ulrich ,  PHILIPP, Susanne ,  MUELLER, Wilfried ,  KREUZER, Thomas

    IPC: F02D41/02 ,  F02D41/34 ,  F01N3/08

    CPC classification number: F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2073 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/011 ,  F01N2570/18 ,  F01N2610/03 ,  F02D41/0082 ,  F02D41/0275 ,  Y02T10/24

    Abstract: An exhaust emission control system for controlling the emission of exhaust gases of a lean engine with several cylinders contains a first exhaust pipe (3) for the exhaust gases of a first group of cylinders (2) and a second exhaust pipe (31) for the exhaust gases of a second group of cylinders (2'). A nitrogen oxide storage catalyst (6, 6') is disposed in each exhaust pipe. Downstream from the storage catalysts, the two exhaust pipes are united at an opening to a common exhaust pipe (5). The common exhaust pipe contains an SCR catalyst (7). The first and second groups of cylinders are periodically supplied opposite to each other alternately with a lean and a fat air/fuel mixture. Accordingly, lean or fat exhaust gases are produced in the cylinders during combustion and are emitted to the corresponding exhaust pipes. Lean and fat exhaust gases are matched to one another in such a way that, after the exhaust gases are brought together in the common exhaust pipe, a lean exhaust gas results. During the regeneration of the storage catalysts, ammonium may be formed, stored by the SCR catalyst, and reacted with nitrogen oxides which unintentionally pass through the storage catalysts during the storage phase.

    COPPER-CONTAINING ZEOLITES HAVING A LOW ALKALI METAL CONTENT, METHOD OF MAKING THEREOF, AND THEIR USE AS SCR CATALYSTS
    16.
    发明公开
    COPPER-CONTAINING ZEOLITES HAVING A LOW ALKALI METAL CONTENT, METHOD OF MAKING THEREOF, AND THEIR USE AS SCR CATALYSTS 审中-公开

    公开(公告)号：EP3388392A1

    公开(公告)日：2018-10-17

    申请号：EP17166394.1

    申请日：2017-04-12

    Applicant: UMICORE AG & CO. KG

    Inventor： SCHUETZE, Frank-Walter ,  VAN TENDELOO, Leen ,  ECKHOFF, Stephan ,  VAN GENECHTEN, Dirk

    IPC: C01B39/02

    CPC classification number: C01B39/026

    Abstract: The present invention discloses crystalline copper-containing small-pore aluminosilicate zeolites having a maximum pore size of eight tetrahedral atoms, containing 2 to 7 wt.-% copper, calculated as CuO and based on the total weight of the respective zeolite, and containing alkali metal cations in a total amount of 0.1 to 0.4 wt.-%, calculated as pure metals and based on the total weight of the zeolite, and having a BET surface area of from 320 to 750 m 2 /g. Furthermore, the invention discloses a process for making said zeolites, comprising the preparation of an aqueous reaction mixture comprising a zeolite of the faujasite framework type, Cu-tetraethylenepentamine (Cu-TEPA) and at least one compound M(OH) x , wherein x is selected from the group consisting of lithium, sodium, potassium, rubidium and cesium, and heating the reaction mixture to form a copper containing small-pore zeolite. The zeolites according to the present invention are suitable SCR catalysts.

    VERFAHREN ZUR ON-BOARD-REAKTIVIERUNG THERMISCH GEALTERTER STICKOXID-SPEICHERKATALYSATOREN IN KRAFTFAHRZEUGEN MIT ÜBERWIEGEND MAGER BETRIEBENEM VERBRENNUNGSMOTOR
    20.
    发明公开
    VERFAHREN ZUR ON-BOARD-REAKTIVIERUNG THERMISCH GEALTERTER STICKOXID-SPEICHERKATALYSATOREN IN KRAFTFAHRZEUGEN MIT ÜBERWIEGEND MAGER BETRIEBENEM VERBRENNUNGSMOTOR 有权
    VERFAHREN ZUR在板-REAKTIVIERUNG THERMISCH GEALTERTER STICKOXID-SPEICHERKATALYSATOREN在KRAFTFAHRZEUGEN MITÜBERWIEGENDMAGER BETRIEBENEM VERBRENNUNGSMOTOR

    公开(公告)号：EP2035665A1

    公开(公告)日：2009-03-18

    申请号：EP07725829.1

    申请日：2007-06-05

    Applicant: Umicore AG & Co. KG

    Inventor： ECKHOFF, Stephan ,  WITTROCK, Meike ,  GOEBEL, Ulrich ,  MUELLER, Wilfried ,  KREUZER, Thomas

    IPC: F01N3/08

    CPC classification number: F01N3/0885 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/101 ,  F01N3/103 ,  F01N13/009 ,  F01N13/011 ,  F01N13/107 ,  F01N2250/12 ,  F01N2260/04 ,  F01N2330/06 ,  F01N2430/06 ,  Y02A50/2324 ,  Y02T10/22

    Abstract: Nitrogen oxide storage catalysts are used for removal of nitrogen oxides present in the lean exhaust gas of so-called lean-burn engines. Storage catalysts are thermally modified at high temperatures. The modification is a sintering of the catalytically active noble metal components of the catalyst and a formation of compounds of the storage components with the support materials. According to the invention, the formation of compounds of the storage materials can be largely reversed by treatment of the storage material with a gas mixture containing carbon dioxide, optionally steam and optionally nitrogen oxide at temperatures between 200 °C and 950 °C, preferably between 300 °C and 700 °C. The reactivation can be carried out with neutral emissions directly in the vehicle during operation by the adjustment of suitable exhaust conditions and regulating the fuel/air mixture.

    Abstract translation: 氮氧化物储存催化剂用于去除所谓贫燃发动机的贫排气中存在的氮氧化物。 储存催化剂在高温下进行热改性。 该改性是催化剂的催化活性贵金属组分的烧结和存储组分与载体材料的化合物的形成。 根据本发明，储存材料化合物的形成可以通过在200℃和950℃之间的温度下用含有二氧化碳，任选的蒸汽和任选的氮氧化物的气体混合物处理储存材料，优选在 300°C和700°C。 通过调节合适的排气条件并调节燃料/空气混合物，可以在运行期间直接在车辆中执行再激活。

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