Porous spherical glass filtrating beads and method for the manufacturing
thereof
    1.
    发明授权
    Porous spherical glass filtrating beads and method for the manufacturing thereof 失效
    多孔球形玻璃过滤珠及其制造方法

    公开(公告)号:US4713338A

    公开(公告)日:1987-12-15

    申请号:US893922

    申请日:1986-08-06

    摘要: Porous glass beads for filtation applications having a homogeneous metaloxane structure and comprising oxides of Si, Zr and optionally Ti and Al. A preferred method for making these beads comprises the steps of (a) providing a mother solution of Si and Zr alkoxides in a water soluble solvent, for instance a lower aliphatic alcohol, (b) providing a liquid dispersant phase in which solution (a) is dispersible and stirring this liquid phase sufficiently to cause (a) to be formed into droplets of substantially uniform size when added to (b), (c) adding (a) to (b) at a rate sufficient to provide said droplets and effecting the hydrolysis of the alkoxides contained therein with consecutive gelation of said droplets into corresponding hardened beads of condensed mixed Si and Zr hydroxides, and (d) separating said beads from the liquid phase and drying to achieve the desired porous mixed oxide structure for the beads.

    摘要翻译: 用于过滤应用的多孔玻璃珠具有均匀的金属氧化物结构并且包含Si,Zr和任选的Ti和Al的氧化物。 制备这些珠粒的优选方法包括以下步骤:(a)在水溶性溶剂例如低级脂族醇中提供Si和Zr醇盐的母溶液,(b)提供液体分散相,其中溶液(a) 是可分散的并且充分搅拌该液相以使(a)在加入到(b)中时形成基本上均匀大小的液滴,(c)以足以提供所述液滴的速度加入(a)至(b) 其中所含的醇盐的水解使所述液滴连续凝胶化成冷凝的混合Si和Zr氢氧化物的相应的硬化珠粒,和(d)将所述珠粒与液相分离并干燥以达到所需的多孔混合氧化物结构。