Process for the production of silicon dioxide ion exchangers
    6.
    发明授权
    Process for the production of silicon dioxide ion exchangers 失效
    生产二氧化硅离子交换剂的方法

    公开(公告)号:US3936388A

    公开(公告)日:1976-02-03

    申请号:US364116

    申请日:1973-05-25

    摘要: An improved process for the production of silicon dioxide ion exchangers, which comprises the step of reacting silicon dioxide with benzyltrichlorosilane, in the absence of solvent and air, followed by hydrolysis, to produce a benzylated silicon dioxide whose benzyl groups can then be substituted with ion exchange reactive groups in a conventional manner.

    摘要翻译: 一种用于生产二氧化硅离子交换剂的改进方法,其包括在不存在溶剂和空气的情况下使二氧化硅与苄基三氯硅烷反应,然后水解的步骤,以产生苄基化的二氧化硅,其苄基可以被离子 以常规方式交换反应性基团。

    Alkali-free preparation of large pentasil crystals as coated catalysts
and fully crystalline catalysts
    9.
    发明授权
    Alkali-free preparation of large pentasil crystals as coated catalysts and fully crystalline catalysts 失效
    作为涂层催化剂和完全结晶的催化剂,大型pentasil晶体的无碱制备

    公开(公告)号:US4871701A

    公开(公告)日:1989-10-03

    申请号:US235620

    申请日:1988-08-24

    摘要: Pentasil coated catalysts and fully crystalline catalysts in which the individual pentasil crystals are larger than 5 .mu.m are prepared by hydrothermal treatment of SiO.sub.2 by a process in which the SiO.sub.2 moldings are subjected to a hydrothermal treatment at from 140.degree. to 220.degree. C. in an alkali-free mixture of water, an amine and/or a tetraalkylammonium compound, with or without ammonia. The aluminum component for the preparation of an aluminosilicate zeolite can be kneaded into the SiO.sub.2 moldings or fed in via the liquid phase during the hydrothermal treatment. The tetraalkylammonium compound used can be a tetra-n-propyl-ammonium salt or hydroxide.

    摘要翻译: 五面体涂层催化剂和其中单个五面体晶体大于5μm的完全结晶催化剂是通过水热处理SiO 2的方法制备的,其中SiO 2模制品在140℃至220℃下进行水热处理 水,胺和/或四烷基铵化合物的无碱混合物,具有或不具有氨。 用于制备铝硅酸盐沸石的铝组分可以在水热处理期间被捏合成SiO 2模制品或通过液相进料。 所用的四烷基铵化合物可以是四正丙基铵盐或氢氧化物。