Supported palladium-gold catalysts and preparation of vinyl acetate therewith
    8.
    发明申请
    Supported palladium-gold catalysts and preparation of vinyl acetate therewith 审中-公开
    负载钯 - 金催化剂和乙酸乙烯酯的制备

    公开(公告)号:US20100121100A1

    公开(公告)日:2010-05-13

    申请号:US12291628

    申请日:2008-11-12

    IPC分类号: C07C67/055 B01J23/652

    摘要: Disclosed is a catalyst. The catalyst comprises palladium, gold, and a support comprising titanium dioxide and tungsten trioxide. The support preferably comprises from 75 wt % to 99 wt % of titanium dioxide and from 1 wt % to 25 wt % of tungsten trioxide. A method for preparing the catalyst is also disclosed. The method comprises impregnating the support with a palladium compound and a gold compound, calcining the impregnated support, and then reducing the calcined support. Further disclosed is a method for preparing vinyl acetate with the catalyst. The catalyst exhibits improved catalytic activity and selectivity.

    摘要翻译: 公开了一种催化剂。 催化剂包括钯,金以及包含二氧化钛和三氧化钨的载体。 载体优选包含75重量%至99重量%的二氧化钛和1重量%至25重量%的三氧化钨。 还公开了制备催化剂的方法。 该方法包括用钯化合物和金化合物浸渍载体,煅烧浸渍的载体,然后还原煅烧的载体。 还公开了一种用催化剂制备乙酸乙烯酯的方法。 催化剂表现出改善的催化活性和选择性。