Oxidation catalyst systems compositions and methods thereof
    44.
    发明授权
    Oxidation catalyst systems compositions and methods thereof 有权
    氧化催化剂体系组合物及其方法

    公开(公告)号:US09259716B2

    公开(公告)日:2016-02-16

    申请号:US13849230

    申请日:2013-03-22

    申请人: Zahra Nazarpoor

    发明人: Zahra Nazarpoor

    摘要: Compositions and methods for the preparation of ZPGM oxidation catalyst systems are disclosed. ZPGM catalyst systems may be employed within catalytic converters under lean hydrocarbon, air to fuel ratio condition to oxidize toxic gases, such as carbon monoxide and other hydrocarbons that may be included in exhaust gas. ZPGM oxidation catalyst systems are completely free of PGM catalyst and may include: a substrate, a washcoat, and an overcoat. Washcoat may include silver as ZPGM catalyst, and carrier material oxides. Similarly, overcoat may include at least one ZPGM catalyst, carrier material oxides and OSMs. Overcoat of the disclosed ZPGM catalyst system may include copper and cerium as ZPGM catalysts. Suitable known in the art chemical techniques, deposition methods and treatment systems may be employed in order to form the disclosed ZPGM catalyst systems. ZPGM catalyst systems may include high surface area, low conversion temperature catalysts that may exhibit high efficiency in the conversion of exhaust gases.

    摘要翻译: 公开了用于制备ZPGM氧化催化剂体系的组合物和方法。 ZPGM催化剂体系可以在贫碳氢化合物,空气与燃料比条件下的催化转化器内使用,以氧化可能包含在废气中的有毒气体,例如一氧化碳和其它烃。 ZPGM氧化催化剂体系完全不含PGM催化剂,并且可以包括:基材,修补基面涂层和外涂层。 洗涂层可以包括作为ZPGM催化剂的银和载体材料氧化物。 类似地,外涂层可以包括至少一种ZPGM催化剂,载体材料氧化物和OSM。 所公开的ZPGM催化剂体系的外涂层可包括铜和铈作为ZPGM催化剂。 为了形成所公开的ZPGM催化剂体系,可以采用本领域已知的合适的化学技术,沉积方法和处理系统。 ZPGM催化剂体系可以包括高表面积,低转化温度的催化剂,其可以在排气转化中表现出高的效率。