Membrane for Gas Phase Separation and Suitable Method for Production Thereof
    20.
    发明申请
    Membrane for Gas Phase Separation and Suitable Method for Production Thereof 审中-公开
    气相分离膜及其生产方法

    公开(公告)号:US20090266237A1

    公开(公告)日:2009-10-29

    申请号:US11887816

    申请日:2006-04-01

    IPC分类号: B01D53/02 B05D5/00

    摘要: The invention relates to a method for the hydrothermal production of a microporous membrane. According to said method, a colloidal solution comprising zeolite frameworks with 4-ring, 6-ring, and/or 8-ring pores which are provided as crystallites whose size ranges from 2 to 25 nm is applied to a porous substrate with the aid of a wet application technique. The applied layer is contacted with a hydrothermal liquid, and a nanocrystalline, microporous zeolite layer having an average pore diameter of 0.2 to 0.45 nm is synthesized at temperatures ranging between 50 and 250° C. and at an autogenous pressure. Such a microporous membrane comprising a porous substrate and at least one nanocrystalline zeolite layer that is disposed thereupon and has an average pore diameter of 0.2 to 0.45 nm is advantageously suitable for use as a separating device for gas phase separation, making it possible to separate particularly N2O2, N2/CO2, H2/CO2, or CO2/CH4 gas mixtures. Said separating device is especially temperature-resistant and can therefore be integrated directly into thermal processes.

    摘要翻译: 本发明涉及微孔膜的水热生产方法。 根据所述方法,将包含沸石骨架的胶体溶液施加到多孔基材上,所述沸石框架具有4-环,6-环和/或8-环孔,所述微孔的尺寸范围为2至25nm, 湿法应用技术。 将施加的层与水热液体接触,并且在50-250℃的温度和自生压力下合成平均孔径为0.2至0.45nm的纳米晶体,微孔沸石层。 这种微孔膜包含多孔基底和至少一个布置在其上并具有0.2至0.45nm的平均孔径的纳米晶体沸石层有利地适合用作气相分离的分离装置,使得可以特别地分离 N2O2,N2 / CO2,H2 / CO2或CO2 / CH4气体混合物。 所述分离装置特别耐温,因此可直接集成到热处理中。