Preparation of fluid bed-catalysts containing the mixed oxides of vanadium and phosphorus
    2.
    发明公开
    Preparation of fluid bed-catalysts containing the mixed oxides of vanadium and phosphorus 失效
    Herstellung von Vanadin-Phosphoroxide enthaltenden Fliessbettkatalysatoren。

    公开(公告)号:EP0056902A2

    公开(公告)日:1982-08-04

    申请号:EP81305884.9

    申请日:1981-12-15

    Abstract: A process for the preparation of a fluid bed oxidation catalyst containing the mixed oxides of vanadium and phosphorus, comprising:

    (a) preparing a catalyst precursor containing a vanadium phosphorus mixed oxide;
    (b) comminuting the catalyst precursor;
    (c) introducing the catalyst precursor into water prior or subsequent to comminution thereof to form an aqueous slurry; and
    (d) spray drying said slurry to form microspheroidal catalyst particles

    is provided, as well as the use of such catalyst in the oxidation 4-carbon atom hydrocarbons, in particular n-butane to produce maleic anhydride. The catalysts prepared from catalyst precursors in organic medium retain their high activity from the above method is used for their preparation.

    Abstract translation: 一种制备含有钒和磷的混合氧化物的流化床氧化催化剂的方法,包括:(a)制备含有钒磷混合氧化物的催化剂前体; (b)粉碎催化剂前体; (c)在粉碎之前或之后将催化剂前体引入水中以形成含水浆料; 并且(d)提供喷雾干燥所述浆料以形成微球状催化剂颗粒,以及在氧化4-碳原子烃,特别是正丁烷中使用这种催化剂以产生马来酸酐。 由有机介质中的催化剂前体制备的催化剂保持其从上述方法的高活性用于其制备。

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