Synthesis of zeolite ZSM-5
    6.
    发明授权
    Synthesis of zeolite ZSM-5 失效
    沸石ZSM-5的合成

    公开(公告)号:US4526879A

    公开(公告)日:1985-07-02

    申请号:US520746

    申请日:1983-08-05

    IPC分类号: B01J29/40 C01B39/40 C01B33/28

    摘要: As synthesized by conventional technique, zeolite ZSM-5 is crystallized in the presence of substantial amount of tetraalkylammonium cations, the alkyl groups of which contain 2 to 5 carbon atoms, such as, for example, tetrapropylammonium. When synthesized in the conventional way, ZSM-5 contains tetraalkylammonium cations as well as a substantial amount of sodium ions. To obtain a more catalytically active form of ZSM-5, the sodium ions must be exchanged to very low levels. By synthesizing zeolite ZSM-5 according to the present method, i.e., in the presence of a combination of an amine and a halide in the presence of a mutual solvent and with a specifically defined reaction mixture composition, ZSM-5 having different organic nitrogen-containing cations but the same crystal structure as conventionally prepared ZSM-5 is obtained. The ZSM-5 prepared in accordance herewith is very low in sodium content as synthesized and has a crystal size of from about 0.05 microns to about 20 microns.

    摘要翻译: 如通过常规技术合成的,沸石ZSM-5在存在大量四烷基铵阳离子(其烷基含有2至5个碳原子的四烷基铵阳离子)存在下结晶,例如四丙基铵。 当以常规方式合成时,ZSM-5含有四烷基铵阳离子以及大量的钠离子。 为了获得更具催化活性的ZSM-5形式,钠离子必须交换到非常低的水平。 通过根据本发明的方法合成沸石ZSM-5,即在相互溶剂存在下,在胺和卤化物的组合存在下,与特定定义的反应混合物组合物,具有不同有机氮气的ZSM-5, 得到与常规制备的ZSM-5相同的晶体结构。 根据本文制备的ZSM-5的钠含量非常低,并且具有约0.05微米至约20微米的晶体尺寸。

    Selective zeolite sorption of group V-B element hydrides and derivatives
thereof
    10.
    发明授权
    Selective zeolite sorption of group V-B element hydrides and derivatives thereof 失效
    V-B族元素氢化物及其衍生物的选择性沸石吸附

    公开(公告)号:US4401572A

    公开(公告)日:1983-08-30

    申请号:US274971

    申请日:1981-06-18

    CPC分类号: B01D15/00 B01D53/02 C02F1/281

    摘要: A method for selectively sorbing Group V-B element hydrides and derivatives thereof from an aqueous solution containing same which comprises contacting said solution under ion-exchange conditions with a crystalline zeolite material having a pore dimension greater than about 5 Angstroms, a Constraint Index between 1 and 12 and a SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio greater than 12.

    摘要翻译: 从含有它的水溶液中选择性吸附VB族元素氢化物及其衍生物的方法,其包括在离子交换条件下使所述溶液与孔尺寸大于约5埃的结晶沸石材料接触,约束指数为1至12 和SiO 2 / Al 2 O 3摩尔比大于12。