Oxygen storage component
    2.
    发明授权
    Oxygen storage component 有权
    储氧组分

    公开(公告)号:US08414835B2

    公开(公告)日:2013-04-09

    申请号:US12301044

    申请日:2007-05-17

    摘要: The present invention relates to oxygen storage components for catalytic converters for automobile exhaust systems, particularly for those with petrol-driven engines. In accordance with the present invention there is provided a ceria containing mixed oxide suitable as an oxygen storage material having a ceria content in the range 10 to 80% by weight and at least one metal oxide in an amount of less than 0.5% by weight, wherein the metal is selected from the first row transition elements and the group IVB elements of the periodic table. The inventions also provides an oxygen storage material for catalytic converters for automobile exhaust systems comprising an oxide of the present invention.

    摘要翻译: 本发明涉及用于汽车排气系统的催化转化器的储氧组分,特别是用于汽油驱动发动机的燃料转化器的储氧组分。 根据本发明,提供一种二氧化铈,其含有适合作为氧化铈含量为10〜80重量%的氧化物储存材料的混合氧化物,和至少一种量小于0.5重量%的金属氧化物, 其中所述金属选自周期表的第一行过渡元素和IVB族元素。 本发明还提供了一种用于包含本发明的氧化物的汽车排气系统的催化转化器的储氧材料。

    Zirconium hydroxide
    3.
    发明授权
    Zirconium hydroxide 有权
    氢氧化锆

    公开(公告)号:US07794687B2

    公开(公告)日:2010-09-14

    申请号:US12278074

    申请日:2007-01-24

    IPC分类号: C01G25/02

    摘要: This invention relates to an improved amorphous zirconium hydroxide and a method for its production. The hydroxide has a surface area of at least 300 m2/g, a total pore volume of at least 0.70 cm3/g and an average pore size of between 5 nm and 15 nm, and is prepared by a process which comprises the steps of: a) preparing an aqueous solution comprising sulphate anions and a zirconium salt such that the ZrO2:SO3 ratio is 1:0.40 to 1:0.52, (b) chilling the solution to below 25° C., (c) adding an alkali in order to precipitate the amorphous zirconium hydroxide, (d) filtering and washing the precipitated zirconium hydroxide with water or an alkali to remove residual sulphate and chloride, (e) hydrothermally treating the zirconium hydroxide at a pressure of less than 3 barg, and (f) drying the zirconium hydroxide. The zirconium hydroxide of the present invention, which can be doped, is particularly useful in catalytic applications.

    摘要翻译: 本发明涉及一种改进的无定形氢氧化锆及其制备方法。 氢氧化物具有至少300m 2 / g的表面积,至少0.70cm 3 / g的总孔体积和5nm至15nm的平均孔径,并且通过包括以下步骤的方法制备: a)制备包含硫酸根阴离子和锆盐的水溶液,使得ZrO 2 :SO 3比为1:0.4至1:0.52,(b)将溶液冷却至低于25℃,(c)依次加入碱 (d)用水或碱过滤和洗涤沉淀的氢氧化锆以除去残余的硫酸盐和氯化物,(e)在小于3巴的压力下水热处理氢氧化锆,和(f) 干燥氢氧化锆。 可以掺杂的本发明的氢氧化锆在催化应用中特别有用。

    OXYGEN STORAGE COMPONENT
    8.
    发明申请
    OXYGEN STORAGE COMPONENT 有权
    氧气储存组件

    公开(公告)号:US20090185961A1

    公开(公告)日:2009-07-23

    申请号:US12301044

    申请日:2007-05-17

    IPC分类号: B01D53/34 C09K3/00

    摘要: The present invention relates to oxygen storage components for catalytic converters for automobile exhaust systems, particularly for those with petrol-driven engines. In accordance with the present invention there is provided a ceria containing mixed oxide suitable as an oxygen storage material having a ceria content in the range 10 to 80% by weight and at least one metal oxide in an amount of less than 0.5% by weight, wherein the metal is selected from the first row transition elements and the group IVB elements of the periodic table. The inventions also provides an oxygen storage material for catalytic converters for automobile exhaust systems comprising an oxide of the present invention.

    摘要翻译: 本发明涉及用于汽车排气系统的催化转化器的储氧组分,特别是用于汽油驱动发动机的燃料转化器的储氧组分。 根据本发明,提供一种二氧化铈,其含有适合作为氧化铈含量为10〜80重量%的氧化物储存材料的混合氧化物,和至少一种量小于0.5重量%的金属氧化物, 其中所述金属选自周期表的第一行过渡元素和IVB族元素。 本发明还提供了一种用于包含本发明的氧化物的汽车排气系统的催化转化器的储氧材料。

    Zirconium Hydroxide
    9.
    发明申请
    Zirconium Hydroxide 有权
    氢氧化锆

    公开(公告)号:US20090005239A1

    公开(公告)日:2009-01-01

    申请号:US12278074

    申请日:2007-01-24

    摘要: This invention relates to an improved amorphous zirconium hydroxide and a method for its production. The hydroxide has a surface area of at least 300 m2/g, a total pore volume of at least 0.70 cm3/g and an average pore size of between 5 nm and 15 nm, and is prepared by a process which comprises the steps of: a) preparing an aqueous solution comprising sulphate anions and a zirconium salt such that the ZrO2:SO3 ratio is 1:0.40 to 1:0.52, (b) chilling the solution to below 25° C., (c) adding an alkali in order to precipitate the amorphous zirconium hydroxide, (d) filtering and washing the precipitated zirconium hydroxide with water or an alkali to remove residual sulphate and chloride, (e) hydrothermally treating the zirconium hydroxide at a pressure of less than 3 barg, and (f) drying the zirconium hydroxide. The zirconium hydroxide of the present invention, which can be doped, is particularly useful in catalytic applications.

    摘要翻译: 本发明涉及一种改进的无定形氢氧化锆及其制备方法。 氢氧化物具有至少300m 2 / g的表面积,至少0.70cm 3 / g的总孔体积和5nm至15nm的平均孔径,并且通过包括以下步骤的方法制备: a)制备包含硫酸根阴离子和锆盐的水溶液,使得ZrO 2 :SO 3比为1:0.4至1:0.52,(b)将溶液冷却至低于25℃,(c)依次加入碱 (d)用水或碱过滤和洗涤沉淀的氢氧化锆以除去残余的硫酸盐和氯化物,(e)在小于3巴的压力下水热处理氢氧化锆,和(f) 干燥氢氧化锆。 可以掺杂的本发明的氢氧化锆在催化应用中特别有用。