Production of antimonate catalysts
    3.
    发明公开
    Production of antimonate catalysts 失效
    抗生素催化剂的生产

    公开(公告)号:EP0069439A3

    公开(公告)日:1984-03-28

    申请号:EP82301865

    申请日:1982-04-08

    CPC classification number: B01J23/8435 B01J23/18 B01J37/0236

    Abstract: A slurry process for producing a fluid-bed catalyst comprising an antimonate-based oxide complex supported on a catalyst support in which (1) source compounds containing all of the elements of said oxide complex and said support material are combined to form a pre-catalyst slurry, (2) the liquid removed from said pre-catalyst slurry to form a pre-catalyst, and (3) said pre-catalyst is heated at elevated temperature to form said catalyst, in which the support material combined with the source compounds in step (1) is composed of (a) a fumed catalyst support material, such as fumed silica, and (b) a catalyst support material sol, such as a silica sol. The pre-catalyst slurry is formed without the addition of a slurry-derived solid containing fumed catalyst support material and one or more of the source compounds. The process is preferably a single slurry process. The catalyst produced has improved catalytic properties and attrition resistance.

    Technique for forming multi-component oxide complex catalysts

    公开(公告)号:EP0005067A3

    公开(公告)日:1980-01-02

    申请号:EP79300663

    申请日:1979-04-20

    Abstract: A process for producing a molybdate or tungstate activated oxide complex catalyst in which the elements of the catalyst are combined together in a precatalyst aqueous slurry, the slurry obtained is dried to form a precatalyst precipitate, and the precatalyst precipitate is then calcined to form the catalyst, characterised in that the key catalytic phase of the catalyst defined as a molybdate or tungstate of Bi, Te, Sb, Sn, Cu or mixtures thereof is preformed prior to combining with the other elements of the catalyst, provided that when one or more elements in the catalyst is supplied to the precatalyst aqueous slurry in the form of
    (a) a source salt having a heat-decomposable cation or anion, (b) an inorganic salt reaction product of the source salt or (c) an aqueous slurry of either (a) or (b) then the elements of the catalyst are combined so that the precatalyst precipitate contains a substantial amount of at least one of the heat-decomposable anions or cations. The catalysts produced by this process are useful in the oxidation and ammoxidation of dlefins.

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