Method of manufacture of molecular sieves
    1.
    发明授权
    Method of manufacture of molecular sieves 失效
    分子筛的制造方法

    公开(公告)号:US5916836A

    公开(公告)日:1999-06-29

    申请号:US834672

    申请日:1997-04-01

    CPC分类号: C01B39/026

    摘要: Zeolites exchanged with lithium ions and, optionally, with polyvalent cations are prepared by ion-exchanging a sodium-containing zeolite, a potassium-containing zeolite or a sodium- and potassium-containing zeolite with ammonium ions, thereby replacing the sodium and/or potassium ions with ammonium ions, and then reacting the ammonium ion-exchanged zeolite with a water-soluble lithium compound under conditions which result in the removal of ammonia from the reaction zone. Polyvalent ions, which may be present in the zeolite undergoing ion-exchange, will not be substantially replaced by the ammonium or lithium ions.

    摘要翻译: 与锂离子交换的沸石和任选地与多价阳离子交换的沸石通过用铵离子将含钠沸石,含钾沸石或含钠和钾的沸石离子交换来制备,从而将钠和/或钾 离子与铵离子反应,然后使铵离子交换的沸石与水溶性锂化合物在导致从反应区除去氨的条件下反应。 可能存在于进行离子交换的沸石中的多价离子基本上不会被铵或锂离子所取代。