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    • 34. 发明授权
    • Composite oxide, composite oxide carrier and catalyst
    • 复合氧化物,复合氧化物载体和催化剂
    • US06150288A
    • 2000-11-21
    • US946102
    • 1997-10-07
    • Tadashi SuzukiHideo Sobukawa
    • Tadashi SuzukiHideo Sobukawa
    • B01D53/94B01J23/10B01J37/02C04B35/48B01J23/54C04B35/50
    • B01D53/945B01D53/9413B01J23/10B01J37/0236B01D2255/1021B01D2255/1025B01D2255/2042B01D2255/2063B01D2255/2065B01D2255/2092B01D2255/908B01D2255/9202B01D2255/9207Y02T10/22
    • The composite oxide and the composite oxide carrier are manufactured by the precursor forming step and firing step. The precursor forming step includes high speed mixing means. The composite oxide catalyst is obtained by preparing a composite of catalytic components simultaneously with the formation of the precursor of composite oxide in the step of forming the precursor of composite oxide. The composite oxide and the composite oxide carrier are composed of a composite oxide in which at least one of cerium and zirconium, and aluminium disperse with extremely high homogeneity. With this structure, the heat resistance of the carrier is improved and consequently, enlargement of particles of the composite oxide defining the carrier, and sintering of adjacent particles of the composite oxide can be restrained, whereby the catalyst using the composite oxide carrier in accordance with the present invention is excellent in heat resistance. With the present invention, the carrier is not limited to a general catalyst carrier. The carrier may be interpreted to indicate general formed bodies. For example, the carrier with the present invention can be also used as materials for sensors and electrodes, optical materials, semiconductors and structure materials. Furthermore, the carrier can be used for a three-way catalyst, NOx catalyst or oxidation catalyst or a part thereof, and a promoter.
    • 复合氧化物和复合氧化物载体通过前体形成步骤和烧制步骤制造。 前体形成步骤包括高速混合装置。 复合氧化物催化剂通过在形成复合氧化物的前体的步骤中同时制备复合氧化物的前体同时制备复合材料而获得。 复合氧化物和复合氧化物载体由铈和锆中的至少一种和铝均匀分散的复合氧化物组成。 通过这种结构,能够提高载体的耐热性,可以抑制复合氧化物的粒子的扩大,能够抑制复合氧化物的相邻粒子的烧结,由此使用复合氧化物载体 本发明耐热性优异。 通过本发明,载体不限于一般的催化剂载体。 载体可以被解释为指示一般成形体。 例如,本发明的载体也可以用作传感器和电极,光学材料,半导体和结构材料的材料。 此外,载体可用于三元催化剂,NOx催化剂或氧化催化剂或其一部分和促进剂。