Vinyl acetate process utilizing a palladium-gold-copper catalyst
    2.
    发明授权
    Vinyl acetate process utilizing a palladium-gold-copper catalyst 失效
    使用钯 - 金 - 铜催化剂的乙酸乙烯酯方法

    公开(公告)号:US5731457A

    公开(公告)日:1998-03-24

    申请号:US870120

    申请日:1997-06-03

    CPC分类号: C07C67/055

    摘要: A process is disclosed for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid as reactants comprising contacting said reactants and a non-halogen containing copper compound with a catalyst comprising a porous support on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium, gold and copper. During the process to prepare vinyl acetate, a stream of alkali metal acetate is preferably passed over the catalyst. The process results in higher vinyl acetate selectivity and productivity due to lower CO.sub.2 selectivity during the life of the catalyst, and/or longer catalyst life.

    摘要翻译: 公开了一种通过乙烯,氧和乙酸的反应生产乙酸乙烯酯的方法,作为反应物,包括将所述反应物和不含卤素的铜化合物与包含多孔载体的催化剂接触,所述催化剂的多孔表面被沉积为催化有效的 金属钯,金和铜的量。 在制备乙酸乙烯酯的过程中,优选通过催化剂上的碱金属乙酸盐流。 该方法由于在催化剂寿命期间较低的CO 2选择性和/或更长的催化剂寿命,导致较高的乙酸乙烯酯选择性和生产率。