Lyotropic liquid crystal nanofiltration membranes
    23.
    发明授权
    Lyotropic liquid crystal nanofiltration membranes 有权
    溶致液晶纳滤膜

    公开(公告)号:US07604129B2

    公开(公告)日:2009-10-20

    申请号:US10529409

    申请日:2003-10-03

    IPC分类号: B01D39/00 B01D29/00 C25D1/08

    摘要: The invention provides composite nanofiltration membranes (FIG. 5) with lyotropic liquid crystal (LLC) polymer porous membranes (30) attached to a porous support (20). The LLC membranes are prepared from LLC monomers which form the inverted hexagonal or bicontinuous cubic phase. The arrangement, size, and chemical properties of the pores can be tailored on the molecular level. The composite membrane of the invention is useful for separation processes involving aqueous and nonaqueous solutions as well as gases. Methods for making and using the composite nanofiltration membranes of the inventions are also provided.

    摘要翻译: 本发明提供了复合纳滤膜(图5),其具有连接到多孔载体(20)上的溶致液晶(LLC)聚合物多孔膜(30)。 LLC膜由形成倒六角或双连续立方相的LLC单体制备。 毛孔的布置,尺寸和化学性质可以在分子水平上进行调整。 本发明的复合膜可用于涉及水和非水溶液以及气体的分离方法。 还提供了制备和使用本发明的复合纳滤膜的方法。

    Isomorphously substituted molecular sieve membranes
    27.
    发明授权
    Isomorphously substituted molecular sieve membranes 失效
    同晶取代分子筛膜

    公开(公告)号:US06767384B1

    公开(公告)日:2004-07-27

    申请号:US09766307

    申请日:2001-01-19

    IPC分类号: B01J2906

    摘要: Zeolite membranes that can be used to continuously separate components of mixtures are disclosed. The zeolite membranes are prepared by isomorphous substitution, which allows systematic modification of the zeolite surface and pore structure. Through proper selection of the basic zeolite framework structure and compensating cations, isomorphous substitution permits high separation selectivity without many of the problems associated with zeolite post-synthesis treatments. The inventive method for preparing zeolite membranes is alkali-free and is much simpler than prior methods for making acid hydrogen zeolite membranes, which can be used as catalysts in membrane reactors.

    摘要翻译: 公开了可用于连续分离混合物组分的沸石膜。 沸石膜通过同晶取代制备,其允许系统地改性沸石表面和孔结构。 通过适当选择碱性沸石骨架结构和补偿阳离子,同晶取代允许高分离选择性,而不需要与沸石后合成处理相关的许多问题。 用于制备沸石膜的本发明方法是无碱的,并且比制备酸性氢沸石膜的现有方法简单得多,其可以用作膜反应器中的催化剂。