OXIDATION CATALYST COMPOSITION AND PM OXIDATION CATALYST
    9.
    发明申请
    OXIDATION CATALYST COMPOSITION AND PM OXIDATION CATALYST 审中-公开
    氧化催化剂组合物和PM氧化催化剂

    公开(公告)号:US20100105547A1

    公开(公告)日:2010-04-29

    申请号:US12531211

    申请日:2008-04-17

    IPC分类号: B01J23/10 B01J23/08 B01J23/34

    摘要: [Object] To provide an oxidation catalyst composition excellent in low temperature activity and a PM oxidation catalyst which can oxidize or burn particulate and the like from an internal combustion engine even at relatively low temperatures. [Solving Means] An oxidation catalyst composition contains cerium, manganese, and a metal M (M is a trivalent metal element excluding cerium). When the oxidation catalyst composition is analyzed by XPS so that orbital energies are subjected to peak separation using the Gaussian function, the Ce4+/Ce3+ atomic weight ratio (atomic % ratio) is 1.7 or higher and Mn2+ is in an amount of 5 atomic % or larger, wherein at least a part of the oxidation catalyst composition forms a composite. The above-mentioned metal M is ytterbium, thulium, erbium, holmium, dysprosium, gadolinium, europium, samarium, promethium, neodymium, praseodymium, scandium, yttrium, aluminum, gallium and/or the like.

    摘要翻译: 本发明提供低温活性优异的氧化催化剂组合物和PM氧化催化剂,即使在相对较低的温度下也能从内燃机中氧化或燃烧颗粒等。 [解决方案]氧化催化剂组合物含有铈,锰和金属M(M是不含铈的三价金属元素)。 当通过XPS分析氧化催化剂组合物时,使用高斯函数对轨道能量进行峰值分离,Ce4 + / Ce3 +原子重量比(原子%比)为1.7以上,Mn2 +为5原子% 其中至少一部分氧化催化剂组合物形成复合物。 上述金属M是镱,ium,铒,钬,镝,钆,铕,钐,ium,钕,镨,钪,钇,铝,镓等。