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    Process for production of catalyst for exhaust gas cleaning
    5.
    发明授权
    Process for production of catalyst for exhaust gas cleaning 失效
    废气净化催化剂生产工艺

    公开(公告)号：US6025296A

    公开(公告)日：2000-02-15

    申请号：US903966

    申请日：1997-07-31

    申请人： Takashi Takemoto ,  Makoto Kyogoku ,  Akihide Takami

    发明人： Takashi Takemoto ,  Makoto Kyogoku ,  Akihide Takami

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J29/04 ,  B01J29/06 ,  B01J29/068 ,  B01J37/00 ,  B01J37/02 ,  F01N3/20 ,  B01J29/00

    CPC分类号： B01J37/0203 ,  B01D53/9445 ,  B01D53/945 ,  B01J29/061 ,  B01J37/0009 ,  B01J37/0201 ,  Y02T10/22 ,  Y10S502/514

    摘要： A process is provided for the production of a catalyst useful for removing nitrogen oxides out of exhaust gases from internal combustion engines operated under lean burn conditions. The catalyst is produced by supporting at least one catalytic metal, such as platinum, iridium, rhodium, other transition metals and alkaline earth metals, as the active component on a support, such as a zeolite, by either wash-coating a solution of the catalytic metal components onto the support; evaporating off solvent from a mixture of solvent, catalyst material and support, or rapidly drying droplets of support and catalyst material containing slurry with a hot gas. The supported catalyst is activated by heating to a temperature of 150 to 300.degree. C. for a period of time sufficient to desorb catalytic material components, such as water, chlorine and ammonia, out of the pores of the catalyst that adversely affect the activity and heat resistance of the catalyst.

    摘要翻译： 提供了一种制备用于从贫燃条件下运行的内燃机的废气中除去氮氧化物的催化剂的方法。 催化剂是通过将至少一种催化金属如铂，铱，铑，其它过渡金属和碱土金属作为活性组分作为活性组分负载在载体如沸石上，通过将涂覆的 催化金属组分到载体上; 从溶剂，催化剂材料和载体的混合物中蒸发溶剂，或快速干燥含有热气体的浆料的载体和催化剂材料的液滴。 负载的催化剂通过在150-300℃的温度下加热至足以使催化材料组分如水，氯和氨从催化剂的孔中脱附而对活性有不利影响的时间来活化; 催化剂的耐热性。

    Catalyst for exhaust gas purification
    7.
    发明授权
    Catalyst for exhaust gas purification 失效
    催化剂用于排气净化

    公开(公告)号：US5489561A

    公开(公告)日：1996-02-06

    申请号：US186928

    申请日：1994-01-27

    申请人： Hideharu Iwakuni ,  Akihide Takami ,  Takashi Takemoto ,  Tadashi Isobe ,  Yasuto Watanabe

    发明人： Hideharu Iwakuni ,  Akihide Takami ,  Takashi Takemoto ,  Tadashi Isobe ,  Yasuto Watanabe

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J29/44 ,  B01J29/06

    CPC分类号： B01D53/945 ,  B01D53/9418 ,  B01D2255/1021 ,  B01D2255/1028 ,  B01D2255/2027 ,  B01D2255/2073 ,  Y02T10/22

    摘要： An exhaust gas purifying catalyst includes a metal-containing silicate and a noble metal active species carried by the metal-containing silicate. The metal-containing silicate has a solid acid characteristic wherein the amount of acid within a region where an acidity function Ho is equal to or smaller than -3.0 ranges from 0.04 to 0.55 mmol/gr. The noble metal active species burns an hydrocarbon component of exhaust gases to decompose an NOx component also contained in the exhaust gases. The catalyst may include a binder for carrying the noble metal active species on the metal-containing silicate. The binder has a solid acid characteristic wherein the amount of acid within a region where the acidity function Ho is equal to or smaller than -3.0 ranges from 0.04 to 0.55 mmol/gr.

    摘要翻译： 废气净化催化剂包括含金属的硅酸盐和由含金属的硅酸盐承载的贵金属活性物质。 含金属的硅酸盐具有固体酸特性，其中酸度函数Ho等于或小于-3.0的区域内的酸的量在0.04至0.55mmol / gr的范围内。 贵金属活性物质燃烧废气的烃成分以分解废气中也含有的NOx成分。 催化剂可以包括用于在含金属的硅酸盐上承载贵金属活性物质的粘合剂。 粘合剂具有固体酸特性，其中酸度函数Ho等于或小于-3.0的区域内的酸的量在0.04至0.55mmol / gr的范围内。

    Exhaust gas purifying catalyst
    9.
    发明申请
    Exhaust gas purifying catalyst 审中-公开
    废气净化催化剂

    公开(公告)号：US20070161508A1

    公开(公告)日：2007-07-12

    申请号：US11637005

    申请日：2006-12-12

    申请人： Koji Minoshima ,  Seiji Miyoshi ,  Hiroshi Yamada ,  Akihide Takami

    发明人： Koji Minoshima ,  Seiji Miyoshi ,  Hiroshi Yamada ,  Akihide Takami

    IPC分类号： B01J23/10

    CPC分类号： B01D53/945 ,  B01J23/002 ,  B01J23/63 ,  B01J37/03 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/3712 ,  B01J2523/3718 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/36 ,  B01J2523/31 ,  B01J2523/3706

    摘要： Disclosed is an exhaust gas purifying catalyst, which comprises an oxygen absorbing material having a catalytic noble metal arranged at a lattice position or an interlattice position of a crystal structure of a composite oxide containing Ce and Zr, which is capable of sufficiently exhibiting a catalytic function even if a ZrO2 mass ratio is out of the range of 20 to 30 mass % or 65 to 90 mass %. Specifically, in an exhaust gas purifying catalyst formed with a catalyst layer including a cerium-zirconium (CeZr) composite oxide, the composite oxide contains ceria (CeO2) and zirconia (ZrO2) in such a manner that a mass ratio of ceria to a total mass of ceria and zirconia falls within the range of 36 to 64 mass %. Further, the composite oxide contains, in the form of an oxide, a rare-earth metal other than cerium (Ce), in the range of 3 to 20 mass % with respect to a total mass of the composite oxide.

    摘要翻译： 公开了一种废气净化催化剂，其包括具有布置在能够充分显示催化功能的包含Ce和Zr的复合氧化物的晶格结构的晶格位置或晶格位置处的催化贵金属的氧吸收材料 即使ZrO 2质量比在20〜30质量％或65〜90质量％的范围内。 具体地，在形成有包含铈 - 锆（CeZr）复合氧化物的催化剂层的废气净化催化剂中，复合氧化物含有二氧化铈（CeO 2/2）和氧化锆（ZrO 2） SUB>），使得二氧化铈与二氧化铈和氧化锆的总质量的质量比落在36〜64质量％的范围内。 此外，复合氧化物以氧化物的形式含有铈（Ce）以外的稀土类金属，相对于复合氧化物的总质量为3〜20质量％。