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    EXHAUST GAS PURIFICATION CATALYST
    3.
    发明申请
    EXHAUST GAS PURIFICATION CATALYST 审中-公开
    排气净化催化剂

    公开(公告)号：US20070179054A1

    公开(公告)日：2007-08-02

    申请号：US11669998

    申请日：2007-02-01

    申请人： Masaaki Akamine ,  Masahiko Shigetsu ,  Hisaya Kawabata

    发明人： Masaaki Akamine ,  Masahiko Shigetsu ,  Hisaya Kawabata

    IPC分类号： B01D53/94

    CPC分类号： B01J23/63 ,  B01D53/945 ,  B01D2255/206 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/908 ,  B01J23/002 ,  B01J23/10 ,  B01J37/03 ,  B01J2523/00 ,  C01G25/006 ,  Y02T10/22 ,  B01J2523/36 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/31

    摘要： A catalytic matter comprises alumina particles. A compound oxide is loaded on surfaces of the alumina particles. The compound oxide contains cerium, zirconium, and lanthanum, but not aluminum. A catalytic metal is loaded on the surfaces of the alumina particles. The catalytic matter may be manufactured by preparing a first acidic solution containing aluminum, adding a first basic solution to the first acidic solution, thereby obtaining a second basic solution and precipitating a first hydroxide in the second basic solution, preparing a second acidic solution containing cerium, zirconium and lanthanum, adding the second acidic solution to the first hydroxide, thereby precipitating a second hydroxide on the first hydroxide, drying the first and second hydroxides to obtain an oxide matter, and loading a catalytic metal on the oxide matter. By loading the compound oxide containing cerium as an oxygen storage material on the alumina particle surfaces, the amount of the oxygen storage material on the surfaces of alumina particles may be increased, and the catalytic metal may loaded on or in the proximity of the oxygen storage material. Therefore, the catalytic metal may be supplied with sufficient amount of active oxygen to purify the exhaust gas.

    摘要翻译： 催化剂物质包括氧化铝颗粒。 复合氧化物负载在氧化铝颗粒的表面上。 复合氧化物含有铈，锆和镧，但不包括铝。 催化金属负载在氧化铝颗粒的表面上。 催化剂可以通过制备含有铝的第一酸性溶液，向第一酸性溶液中加入第一碱性溶液，从而获得第二碱性溶液并在第二碱性溶液中沉淀第一氢氧化物，制备含有铈的第二酸性溶液 ，锆和镧，将第二酸性溶液加入到第一氢氧化物中，由此在第一氢氧化物上沉淀第二氢氧化物，干燥第一和第二氢氧化物以获得氧化物，并将催化金属负载在氧化物上。 通过将含有铈作为储氧材料的复合氧化物负载在氧化铝颗粒表面上，可以增加氧化铝颗粒表面上的储氧材料的量，并且催化金属可以装载在氧储存器上或其附近 材料。 因此，催化金属可以被供给足量的活性氧来净化废气。

    Exhaust gas purification catalyst
    7.
    发明授权
    Exhaust gas purification catalyst 有权
    废气净化催化剂

    公开(公告)号：US09415383B2

    公开(公告)日：2016-08-16

    申请号：US13115876

    申请日：2011-05-25

    申请人： Masaaki Akamine ,  Masahiko Shigetsu

    发明人： Masaaki Akamine ,  Masahiko Shigetsu

    IPC分类号： B01J23/10 ,  B01J35/00 ,  B01D53/94 ,  B01J23/46 ,  B01J23/63 ,  B01J35/02 ,  B01J37/03 ,  B01J21/06 ,  B01J21/04

    CPC分类号： B01J35/0006 ,  B01D53/945 ,  B01D2255/1025 ,  B01D2255/2063 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/407 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2258/012 ,  B01J21/04 ,  B01J21/066 ,  B01J23/464 ,  B01J23/63 ,  B01J35/023 ,  B01J37/038 ,  Y02T10/22

    摘要： An exhaust gas purification catalyst includes a catalytic layer on a carrier, in which a particle component A and a particle component B are mixed. The particle component A is composed of catalytic-metal-doped CeZr-based mixed oxide powder, and has a particle size distribution with a peak in a particle size range of equal to or greater than 100 nm and equal to or less than 300 nm. A CeO2/(CeO2+ZrO2) mass ratio of CeZr-based mixed oxide is equal to or greater than 30% and equal to or less than 75%. The particle component B is composed of at least one selected from a group consisting of activated alumina powder, Zr-based-oxide-supported alumina powder, and catalytic-metal-undoped CeZr-based mixed oxide powder. At least a part of particles of the particle component B has a particle size larger than that of the particle component A.

    摘要翻译： 废气净化催化剂包括载体上的催化剂层，其中颗粒组分A和颗粒组分B被混合。 颗粒组分A由催化金属掺杂的CeZr基混合氧化物粉末组成，并且具有在等于或大于100nm且等于或小于300nm的粒度范围内的峰值的粒度分布。 CeZr基混合氧化物的CeO 2 /（CeO 2 + ZrO 2）质量比等于或大于30％且等于或小于75％。 颗粒组分B由选自活性氧化铝粉末，Zr-氧化物负载的氧化铝粉末和催化金属未掺杂的CeZr基混合氧化物粉末中的至少一种组成。 颗粒组分B的颗粒的至少一部分具有比颗粒组分A的颗粒大的粒径。