IRON OXIDE-ZIRCONIA COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION CATALYST
    14.
    发明申请
    IRON OXIDE-ZIRCONIA COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION CATALYST 有权
    氧化铁 - 氧化锆氧化物及其制造方法和排气净化催化剂

    公开(公告)号:US20150080211A1

    公开(公告)日:2015-03-19

    申请号:US14384283

    申请日:2013-04-26

    摘要: A composite oxide with a high oxygen storage capacity is provided without using cerium. The composite oxide is an iron oxide-zirconia composite oxide containing iron, zirconium, and a rare-earth element. The total content of Fe2O3, ZrO2, and an oxide of the rare-earth element is not less than 90 mass %, the content of an iron oxide in terms of Fe2O3 is 10 to 90 mass %, and the absolute value of the covariance COV(Fe, Zr+X) of the composite oxide, which has been baked in the atmosphere at a temperature of greater than or equal to 900° C. for 5 hours or more, determined by the following Formulae (1) to (3), is not greater than 20:  [ Math .  1 ]  R i  ( Fe ) = I i  ( Fe ) × 100 I i  ( Fe ) + I i  ( Zr ) + I i  ( X ) ( 1 )  R i  ( Zr + X ) = { I i  ( Zr ) + I i  ( X ) } × 100 I i  ( Fe ) + I i  ( Zr ) + I i  ( X ) ( 2 ) COV  ( Fe , Zr + X ) = 1 n  ∑ i = 1 n   [ { R i  ( Fe ) - R av  ( Fe ) } × { R i  ( Zr + X ) - R av  ( Zr + X ) } ] ( 3 ) (in the formula, Ii(Fe), Ii(Zr), and Ii(X) respectively represent the ratios of the X-ray intensities of iron, zirconium, and the rare-earth element measured at a measurement point i (where i=1 to n) to the 100% intensities of the respective elements as measured by subjecting the composite oxide to a ray analysis through EPMA (WDX: wavelength dispersive X-ray spectrometry), where Rav(Fe) and Rav(Zr+X) represent the mean values of Ri(Fe) and Ri(Zr+X), respectively, at all measurement points n).

    摘要翻译: 提供具有高储氧能力的复合氧化物,而不使用铈。 复合氧化物是含有铁,锆和稀土元素的氧化铁 - 氧化锆复合氧化物。 Fe2O3,ZrO2和稀土类元素的氧化物的总含量为90质量%以上,Fe 2 O 3的氧化铁含量为10〜90质量%,协方差COV的绝对值 (1)〜(3)确定的复合氧化物的(Fe,Zr + X),其在大气中在大于或等于900℃的温度下烘烤5小时以上, ,不大于20: (Fe)= I(Fe)×100 I i(Fe)+ I(Zr)+ I(X)(1)R i(Zr + X )(I)(X)(X)(2)COV(Fe,Zr + X) )= 1 nΣi = 1 n[{R i(Fe)-R av(Fe)}×{R i(Zr + X)-R av(Zr + X)}] 3)(式中,Ii(Fe),Ii(Zr)和Ii(X)分别表示在测量点i测量的铁,锆和稀土元素的X射线强度的比例 其中i = 1至n)相对于通过EPMA(WDX:波长色散X射线光谱法)对复合氧化物进行射线分析测量的各元素的100%强度,其中Rav(Fe)和Rav(Zr + X)分别表示在所有测量点n处的Ri(Fe)和Ri(Zr + X)的平均值。

    Exhaust gas purifying catalyst, metal oxide particle and production process thereof
    16.
    发明授权
    Exhaust gas purifying catalyst, metal oxide particle and production process thereof 有权
    废气净化催化剂,金属氧化物颗粒及其制备方法

    公开(公告)号:US07745371B2

    公开(公告)日:2010-06-29

    申请号:US10588603

    申请日:2005-03-08

    IPC分类号: B01J23/00

    摘要: In order to provide an exhaust gas purifying catalyst having improved heat resistance and OSC, a metal oxide particle, and a production process of the metal oxide particle, a metal oxide particle having a core (1) where the total molar number of alumina and silica is larger than the molar number of ceria, and a surface layer (2) where the molar number of ceria is larger than the total molar number of alumina and silica is provided. Further, an exhaust gas purifying catalyst comprising the metal oxide particle and a noble metal supported on the metal oxide particle; and a production process of the metal oxide particle are provided.

    摘要翻译: 为了提供具有改善的耐热性和OSC,金属氧化物颗粒和金属氧化物颗粒的制造方法的废气净化催化剂,具有芯(1)的金属氧化物颗粒,其中氧化铝和二氧化硅的总摩尔数 大于二氧化铈的摩尔数,并且提供二氧化铈的摩尔数大于氧化铝和二氧化硅的总摩尔数的表面层(2)。 此外,包含金属氧化物颗粒和负载在金属氧化物颗粒上的贵金属的废气净化催化剂; 并提供金属氧化物颗粒的制造方法。

    Catalyst Support Powder and Exhaust Gas Purifying Catalyst
    18.
    发明申请
    Catalyst Support Powder and Exhaust Gas Purifying Catalyst 有权
    催化剂载体粉末和废气净化催化剂

    公开(公告)号:US20090124491A1

    公开(公告)日:2009-05-14

    申请号:US11886327

    申请日:2006-03-20

    IPC分类号: B01J23/10 B01J23/42

    摘要: The present invention provides a catalyst support powder 3 comprising ceria and zirconia, wherein the ratio of the molar fraction (mol %) of ceria on the support powder surface as measured by the X-ray photoelectron spectroscopy to the molar fraction (mol %) of ceria in the raw material is from 1.0 to 1.5. Further, the present invention provides an exhaust gas purifying catalyst 5 comprising the catalyst support powder 3 and platinum 4 supported thereon.

    摘要翻译: 本发明提供了包含二氧化铈和氧化锆的催化剂载体粉末3,其中通过X射线光电子能谱法测量的载体粉末表面上的二氧化铈的摩尔分数(摩尔%)与摩尔分数(摩尔%)之比 原料中的二氧化铈为1.0〜1.5。 此外,本发明提供一种废气净化催化剂5,其包含催化剂载体粉末3和负载在其上的铂4。

    Catalyst for Emission Gas Purification
    19.
    发明申请
    Catalyst for Emission Gas Purification 审中-公开
    催化剂用于排放气体净化

    公开(公告)号:US20090099011A1

    公开(公告)日:2009-04-16

    申请号:US11922456

    申请日:2006-06-20

    申请人: Masahide Miura

    发明人: Masahide Miura

    IPC分类号: B01J23/10

    摘要: A catalyst 10 for purifying emission gas including a substrate 12, and on the substrate 12, a first catalyst layer 14 including a cerium oxide-zirconia based composite support supporting Pt or Pd, a second catalyst layer 16 including a support containing zirconia as a main component that supports Rh, and a diffusion barrier layer 18 interposed between the first catalyst layer 14 and the second catalyst layer 16 and containing metal oxide whose electronegativity is lower than that of Ce.

    摘要翻译: 一种用于净化包括基板12的排放气体的催化剂10,并且在基板12上,包括支撑Pt或Pd的氧化铈 - 氧化锆基复合载体的第一催化剂层14,包含以氧化锆为主体的载体的第二催化剂层16 支撑Rh的成分和介于第一催化剂层14和第二催化剂层16之间并且含有电负性低于Ce的金属氧化物的扩散阻挡层18。

    Exhaust gas purifying catalyst, metal oxide particle and production process thereof
    20.
    发明申请
    Exhaust gas purifying catalyst, metal oxide particle and production process thereof 有权
    废气净化催化剂,金属氧化物颗粒及其制备方法

    公开(公告)号:US20070179052A1

    公开(公告)日:2007-08-02

    申请号:US10588603

    申请日:2005-03-08

    IPC分类号: B01J23/00

    摘要: In order to provide an exhaust gas purifying catalyst having improved heat resistance and OSC, a metal oxide particle, and a production process of the metal oxide particle, a metal oxide particle having a core (1) where the total molar number of alumina and silica is larger than the molar number of ceria, and a surface layer (2) where the molar number of ceria is larger than the total molar number of alumina and silica is provided. Further, an exhaust gas purifying catalyst comprising the metal oxide particle and a noble metal supported on the metal oxide particle; and a production process of the metal oxide particle are provided.

    摘要翻译: 为了提供具有改善的耐热性和OSC,金属氧化物颗粒和金属氧化物颗粒的制造方法的废气净化催化剂,具有芯(1)的金属氧化物颗粒,其中氧化铝和二氧化硅的总摩尔数 大于二氧化铈的摩尔数,并且提供二氧化铈的摩尔数大于氧化铝和二氧化硅的总摩尔数的表面层(2)。 此外,包含金属氧化物颗粒和负载在金属氧化物颗粒上的贵金属的废气净化催化剂; 并提供金属氧化物颗粒的制造方法。