Ammoxidation catalysts for fluidized/moving bed reactors
    1.
    发明授权
    Ammoxidation catalysts for fluidized/moving bed reactors 失效
    用于流化/移动床反应器的氨氧化催化剂

    公开(公告)号:US06200926B1

    公开(公告)日:2001-03-13

    申请号:US08769446

    申请日:1996-12-19

    IPC分类号: B01J2300

    摘要: Solid catalysts suited for the fluidized/moving bed catalytic ammoxidation of alkanes comprise an active catalytic phase having the empirical formula (I): VSbaSnbTicFedEeOx  (I) in which E is an element which provides an oxide of rutile structure or an element which, in combination with V, Sb, Sn, Ti, Fe and/or with another element E, provides a phase of rutile or trirutile structure, or a solid solution of rutile structure, a is a whole or fractional number equal to or greater than 0.5, b, c, d and e, independently, are each a whole or fractional number ranging from 0 to 100, and x is a whole or fractional number determined by the oxidation state of the other elements, such active catalytic phase being deposited onto/into particulates of a solid and porous oxidic support therefor, and are produced by (a) impregnating the solid and porous oxidic support with a solution, in at least one saturated alcohol, of compounds of vanadium and antimony and, optionally, compounds of tin and/or titanium and/or of iron and/or of element E, (b) contacting the solid and porous oxidic support thus impregnated with an aqueous buffer solution having a pH ranging from about 6 to 8, (c) separating the solids from such aqueous buffer solution and drying same, and (d) calcining the dried solids in two stages.

    摘要翻译: 适用于流化/移动床的固体催化剂催化氨基氧化烷烃包括具有经验式(I)的活性催化相:其中E是提供金红石结构的氧化物的元素或与V,Sb ,Sn,Ti,Fe和/或另一元素E提供金红石或三元结构的相或金红石结构的固溶体,a是等于或大于0.5的整数或分数,b,c,d 和e独立地分别为0至100的整数或分数,x为由其它元素的氧化态确定的整数或分数,该活性催化相沉积在固体颗粒中, 通过(a)在至少一种饱和醇中的溶液中浸渍固体和多孔氧化载体来制备,其中钒和锑的化合物以及任选的锡和/或钛和/或 的铁和 /或元素E,(b)使由此浸渍的固体和多孔氧化物载体与pH范围为约6至8的水性缓冲溶液接触,(c)将该固体与该缓冲溶液分离并干燥,和 d)分两步焙烧干固体。