Catalyst prepared by homogeneous precipitation under high temperature and pressure
    2.
    发明授权
    Catalyst prepared by homogeneous precipitation under high temperature and pressure 失效
    在高温和高压下均匀沉淀制备的催化剂

    公开(公告)号:US3668148A

    公开(公告)日:1972-06-06

    申请号:US3668148D

    申请日:1970-04-06

    CPC classification number: B01J37/031 B01J23/755 B01J35/0053

    Abstract: A process for preparing a catalyst comprising a metallic catalytic agent on a particulate carrier is disclosed which provides improved uniformity of distribution and fineness of division with narrowness of particle size distribution of the metallic catalytic agent on the carrier. The particles of carrier are suspended by agitation in an aqueous solution of a salt of the metallic catalytic agent and of a source, on heating in aqueous solution, of hydroxyl ions. The suspension is heated in a sealed vessel above 100* C to precipitate the metal or the particles with uniformity of distribution and fineness of division with narrowness of particle size distribution. The metal is converted by conventional procedures to the appropriate active, oxidized or reduced, state. The process is particularly significant with carriers, such as alumina and silica, that in alkaline media are liable to undergo structural charges.

    Abstract translation: 公开了一种制备包含颗粒载体上的金属催化剂的催化剂的方法,其提供了分散性的均匀性以及载体上的金属催化剂的粒度分布不均匀的分裂细度。 通过搅拌将载体颗粒悬浮在金属催化剂的盐和源的水溶液中,在水溶液中加热羟基离子。 将该悬浮液在高于100℃的密封容器中加热,以均匀分布的细度和粒度分布的狭窄沉淀金属或颗粒。 金属通过常规方法转化为适当的活性,氧化或还原状态。 该方法对于载体如氧化铝和二氧化硅在碱性介质中易于经历结构电荷是特别重要的。

    Process for preparing supported catalysts
    3.
    发明授权
    Process for preparing supported catalysts 失效
    制备支持催化剂的方法

    公开(公告)号:US3637529A

    公开(公告)日:1972-01-25

    申请号:US3637529D

    申请日:1970-04-06

    Abstract: A process for preparing a catalyst comprising a metallic catalytic agent on a particulate carrier is disclosed which provides improved uniformity of distribution and fineness of division with narrowness of particle size distribution of the metallic catalytic agent on the carrier. The carrier is impregnated with an aqueous solution of a salt of the metallic catalytic agent and of a source, on heating in aqueous solution, of hydroxyl ions. The impregnated carrier is heated without substantial loss by evaporation of the aqueous solution to precipitate the metal or the particles with uniformity of distribution and fineness of division with narrowness of particle size distribution. The metal is converted by conventional methods to the appropriate active, oxidized or reduced, state. The process is particularly significant with carriers, such as alumina and silica, that in alkaline media are liable to undergo structural charges.

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