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    1.
    发明专利
    未知

    公开(公告)号：DE60139569D1

    公开(公告)日：2009-09-24

    申请号：DE60139569

    申请日：2001-10-15

    Applicant: CORNING INC

    Inventor： CUTLER WILLARD A ,  DAY JOHN P ,  LAKHWANI SHAHID G ,  OGUNWUMI STEVEN B

    IPC: B01J8/00 ,  B01D53/86 ,  B01D53/94 ,  B01J23/58 ,  B01J23/63 ,  B01J35/00 ,  B01J37/02 ,  C01B21/20 ,  C04B35/44 ,  C04B35/46 ,  C04B41/85 ,  F01N3/08 ,  F01N3/10 ,  F01N3/28

    Abstract: A catalyst for purification of exhaust gases including (1) a catalysis-promoting coating comprising a noble metal catalyst and a NOx storage component loaded onto a carrier material, wherein the NOx storage component comprises an alkali metal and, (2) a ceramic substrate for supporting the catalysis-promoting coating, wherein the ceramic substrate exhibits resistance to alkali metal migration below 1000° C. and a coefficient of thermal expansion of less than about 25x10 -7 /° C. (25-800° C.). A second aspect of, the invention is a process for purifying an exhaust gas from a lean burn engine involving simultaneously removing carbon monoxide, hydrocarbons and nitrogen oxides by bringing the exhaust gas from a lean burn engine into contact with the exhaust gas purifying catalyst of the present invention disclosed above. In this process a majority of the nitrogen oxides in the exhaust gas are adsorbed to the NOx storage component on the porous support under a lean burn atmosphere in which oxidizing concentrations are above a stoichiometric point that is required for oxidizing components to be oxidized in the exhaust gas. Furthermore, when the exhaust gas is temporarily change from lean burn to fuel-rich, the adsorbed nitrogen oxides are released and chemically reduced by a reaction with the hydrocarbons and carbon monoxide in the exhaust gas under a stoichiometric atmosphere or a fuel-rich atmosphere in which oxygen concentrations are below stoichiometric point.

    CATALYST SUPPORT
    6.
    发明申请
    CATALYST SUPPORT 审中-公开
    催化剂支持

    公开(公告)号：WO2004069397A3

    公开(公告)日：2005-04-21

    申请号：PCT/US2004001656

    申请日：2004-01-21

    Applicant: CORNING INC ,  CUTLER WILLARD A ,  TAO TINGHONG

    Inventor： CUTLER WILLARD A ,  TAO TINGHONG

    IPC: B01J21/14 ,  B01J35/04 ,  B01J35/10 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  B01J21/04 ,  B01J21/08 ,  B01J21/12 ,  B01J23/02 ,  B01J27/22 ,  B01J29/04 ,  C03C3/085 ,  C04B35/00

    CPC classification number: B01J21/14 ,  B01J35/04 ,  B01J35/10 ,  B01J35/1076 ,  B01J35/1085 ,  F01N3/0814 ,  F01N3/206 ,  F01N3/2828 ,  F01N2330/06 ,  F01N2330/48 ,  F01N2610/02

    Abstract: A catalyst support for use in technologies (i.e., SCR and NOx adsorbers) which address the reduction of NOx from exhaust emissions of diesel and GDI engines. The catalyst support has a honeycomb body composed of a porous ceramic material, and a plurality of parallel cell channels traversing the body from a frontal inlet end to an outlet end thereof. The porous ceramic material is defined by a total porosity greater than 45 vol. %, and a network of interconnected pores with a narrow pore size distribution of pores having a median pore size greater than 5 micrometers but less than 20 micrometers. The catalyst support is capable of attaining higher catalyst loadings without a pressure drop penalty.

    Abstract translation: 用于技术（即SCR和NOx吸附器）的催化剂载体，其用于解决柴油和GDI发动机废气排放物中NOx的减少。 催化剂载体具有由多孔陶瓷材料构成的蜂窝体和从正面入口端到出口端的多个平行的细胞通道。 多孔陶瓷材料的总孔隙率大于45体积。 ％，以及具有中孔尺寸大于5微米但小于20微米的孔的窄孔径分布的相互连通的孔的网络。 催化剂载体能够获得更高的催化剂负载而没有压降损失。

    CATALYST FOR PURIFYING EXHAUST GASES
    9.
    发明公开
    CATALYST FOR PURIFYING EXHAUST GASES 有权
    KATALYSATOR ZUR REINIGUNG VON ABGASEN

    公开(公告)号：EP1341599A4

    公开(公告)日：2006-07-19

    申请号：EP01981887

    申请日：2001-10-15

    Applicant: CORNING INC

    Inventor： CUTLER WILLARD A ,  DAY JOHN P ,  LAKHWANI SHAHID G ,  OGUNWUMI STEVEN B

    IPC: B01D53/86 ,  B01D53/94 ,  B01J23/58 ,  B01J23/63 ,  B01J35/00 ,  B01J37/02 ,  C04B35/44 ,  C04B35/46 ,  C04B41/85 ,  F01N3/08 ,  F01N3/10 ,  F01N3/28 ,  B01J8/00 ,  C01B21/20

    CPC classification number: C04B35/44 ,  B01D53/865 ,  B01D53/9422 ,  B01D2255/102 ,  B01D2255/2022 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/2047 ,  B01D2255/206 ,  B01D2255/91 ,  B01J23/58 ,  B01J23/63 ,  B01J37/0215 ,  C04B35/117 ,  C04B35/462 ,  C04B35/465 ,  C04B38/0006 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/3234 ,  C04B2235/3236 ,  C04B2235/3244 ,  C04B2235/3272 ,  C04B2235/80 ,  F01N3/0814 ,  F01N3/0842 ,  F01N2510/06

    Abstract: A catalyst for purification of exhaust gases including (1) a catalysis-promoting coating comprising a noble metal catalyst and a NOx storage component loaded onto a carrier material, wherein the NOx storage component comprises an alkali metal and, (2) a ceramic substrate for supporting the catalysis-promoting coating, wherein the ceramic substrate exhibits resistance to alkali metal migration below 1000°C and a coefficient of thermal expansion of less than about 25x10-7/°C (25-800°C). A second aspect of the invention is a process for purifying an exhaust gas from a lean burn engine involving simultaneously removing carbon monoxide, hydrocarbons and nitrogen oxides by bringing the exhaust gas from a lean burn engine into contact with the exhaust gas purifying catalyst of the present invention disclosed above. In this process a majority of the nitrogen oxides in the exhaust gas are adsorbed to the NOx storage component on the porous support under a lean burn atmosphere in which oxidizing concentrations are above a stoichiometric point that is required for oxidizing components to be oxidized in the exhaust gas. Furthermore, when the exhaust gas is temporarily change from lean burn to fuel-rich, the adsorbed nitrogen oxides are released and chemically reduced by a reaction with the hydrocarbons and carbon monoxide in the exhaust gas under a stoichiometric atmosphere or a fuel-rich atmosphere in which oxygen concentrations are below stoichiometric point.

    Abstract translation: 1.一种用于净化废气的催化剂，其包括（1）催化促进涂层，其包含贵金属催化剂和负载在载体材料上的NOx储存组分，其中所述NOx储存组分包含碱金属，和（2）陶瓷基材， 支持催化促进涂层，其中陶瓷基体表现出耐碱性金属迁移低于1000℃，热膨胀系数小于约25×10 -7 /℃（25-800 C。）。 本发明的第二个方面是一种从稀薄燃烧发动机中净化废气的方法，该方法通过使来自稀燃燃烧发动机的排气与排气净化催化剂接触而同时除去一氧化碳，烃和氮氧化物 以上公开的本发明。 在该方法中，废气中的大部分氮氧化物在稀燃气氛下吸附在多孔载体上的NOx储存组分上，其中氧化浓度高于在排气中氧化组分所需的化学计量点 加油站。 此外，当废气临时从稀燃变为富燃时，吸附的氮氧化物在化学计量气氛或富燃料气氛下与废气中的烃和一氧化碳反应释放和化学还原 哪个氧浓度低于化学计量点。

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