Method for Making High Performance Mixed Matrix Membranes
    42.
    发明申请
    Method for Making High Performance Mixed Matrix Membranes 审中-公开
    制备高性能混合基质膜的方法

    公开(公告)号:US20090149565A1

    公开(公告)日:2009-06-11

    申请号:US11954013

    申请日:2007-12-11

    摘要: The present invention discloses method for making defect-free high performance mixed matrix membranes (MMMs) containing a continuous polymer matrix and dispersed molecular sieves such as AlPO-14 or UZM-5. These MMMs can be used for separations. The novel method for making defect-free high performance MMMs comprises: post treating the MMM at a temperature ≧150° C. This new method results in a MMM with either no macrovoids or voids of less than 5 angstroms at the interface of the continuous polymer matrix and the molecular sieves. The MMMs are in the form of symmetric dense film, thin-film composite (TFC), asymmetric flat sheet or asymmetric hollow fiber. These MMMs have good flexibility and high mechanical strength, and exhibit high carbon dioxide/methane (CO2/CH4) selectivity and high CO2 permeance for CO2/CH4 separation. The MMMs are suitable for a variety of liquid, gas, and vapor separations.

    摘要翻译: 本发明公开了制备含有连续聚合物基质和分散分子筛如AlPO-14或UZM-5的无缺陷高性能混合基质膜(MMM)的方法。 这些MMM可用于分离。 用于制造无缺陷的高性能MMM的新方法包括:在> = 150℃的温度下对MMM进行后处理。该新方法导致MMM在连续的界面处没有大孔或小于5埃的空隙 聚合物基质和分子筛。 MMM是对称致密膜,薄膜复合材料(TFC),不对称平板或不对称中空纤维的形式。 这些MMM具有良好的柔韧性和高的机械强度,并且对于CO 2 / CH 4分离显示出高二氧化碳/甲烷(CO 2 / CH 4)选择性和高CO 2渗透性。 MMM适用于各种液体,气体和蒸气分离。

    UV CROSS-LINKED POLYMER FUNCTIONALIZED MOLECULAR SIEVE/POLYMER MIXED MATRIX MEMBRANES
    43.
    发明申请
    UV CROSS-LINKED POLYMER FUNCTIONALIZED MOLECULAR SIEVE/POLYMER MIXED MATRIX MEMBRANES 审中-公开
    紫外线交联聚合物官能化分子筛/聚合物混合基质膜

    公开(公告)号:US20080295691A1

    公开(公告)日:2008-12-04

    申请号:US11756988

    申请日:2007-06-01

    IPC分类号: B01D46/24

    摘要: The present invention discloses methods of separating gases using high performance UV cross-linked polymer functionalized molecular sieve/polymer mixed matrix membranes (MMMs) with either no macrovoids or voids of less than several angstroms at the interface of the polymer matrix and the molecular sieves. These UV cross-linked MMMs were prepared by incorporating polyethersulfone (PES) functionalized molecular sieves such as AIPO-14 and UZM-25 small pore microporous molecular sieves into a continuous UV cross-linkable polyimide polymer matrix followed by UV cross-linking. The UV cross-linked MMMs in the form of symmetric dense film, asymmetric flat sheet membrane, or asymmetric hollow fiber membranes have good flexibility, high mechanical strength, and exhibit significantly enhanced selectivity and permeability over polymer membranes made from corresponding continuous polyimide polymer matrices for carbon dioxide/methane and hydrogen/methane separations. The MMMs of the present invention are suitable for a variety of liquid, gas, and vapor separations.

    摘要翻译: 本发明公开了使用高分子量UV交联聚合物官能化分子筛/聚合物混合基质膜(MMM)分离气体的方法,在聚合物基质和分子筛的界面处没有大孔或小于几埃的空隙。 这些UV交联MMM通过将聚醚砜(PES)官能化分子筛如AIPO-14和UZM-25小孔微孔分子筛掺入连续的可UV交联的聚酰亚胺聚合物基质中,然后进行UV交联来制备。 对称致密膜,不对称平板膜或不对称中空纤维膜形式的UV交联MMMs具有良好的柔韧性,高机械强度,并且在由相应的连续聚酰亚胺聚合物基质制成的聚合物膜上表现出显着增强的选择性和渗透性 二氧化碳/甲烷和氢气/甲烷分离。 本发明的MMM适用于各种液体,气体和蒸气分离。

    Zeolitic capillary columns for gas chromatography
    45.
    发明授权
    Zeolitic capillary columns for gas chromatography 失效
    用于气相色谱的沸石毛细管柱

    公开(公告)号:US5719322A

    公开(公告)日:1998-02-17

    申请号:US730719

    申请日:1996-09-20

    摘要: Methods have been found to prepare fused silica capillary gas chromatographic columns where the stationary phase is a molecular sieve affixed to the silica capillary wall without the aid of an organic binder by modifying the interior surface of the silica prior to contact with the molecular sieve. These totally inorganic columns greatly expand the application and range of gas chromatographic separations and allow the use of non-traditional carrier gases, even air, while not degrading the separation of components. The columns are films of small molecular sieve particles affixed to a silica surface modified by such treatments as hydrogen peroxide, alumina deposition, or silica deposition followed by fixation at 80.degree.-160.degree. C.

    摘要翻译: 已经发现制备熔融石英毛细管气相色谱柱的方法,其中固定相是通过在与分子筛接触之前改性二氧化硅的内表面而借助于有机粘合剂而附着在二氧化硅毛细管壁上的分子筛。 这些全无机柱大大扩展了气相色谱分离的应用范围,并允许使用非传统载气,甚至空气,同时不会降低组分的分离。 柱是附着在通过诸如过氧化氢,氧化铝沉积或二氧化硅沉积的处理改性的二氧化硅表面上的小分子筛颗粒的膜,随后在80℃-160℃下固定。

    High plasticization-resistant cross-linked polymeric membranes for separations
    49.
    发明授权
    High plasticization-resistant cross-linked polymeric membranes for separations 有权
    用于分离的高增塑抗性交联聚合物膜

    公开(公告)号:US08816003B2

    公开(公告)日:2014-08-26

    申请号:US12145153

    申请日:2008-06-24

    IPC分类号: C08F12/22

    摘要: This invention involves a composition, a method of making, and an application of high plasticization-resistant chemically cross-linked polymeric membranes such as cross-linked cellulose acetate (CA) membrane. These cross-linked polymeric membranes with covalently interpolymer-chain-connected rigid networks showed no decrease in CO2/CH4 ideal selectivity under 690 kPa (100 psig) pure CO2 pressure and also no CO2 plasticization up to 3447 kPa (500 psig) pure CO2 pressure. By using the method of chemical cross-linking as described in this invention, the separation characteristics of the polymeric membranes can be decisively improved. These new cross-linked polymeric membranes can be used not only for gas separations such as CO2/CH4 and CO2/N2 separations, O2/N2 separation, olefin/paraffin separations (e.g. propylene/propane separation), iso/normal paraffins separations, but also for liquid separations such as pervaporation and desalination.

    摘要翻译: 本发明涉及一种组合物,制备方法,以及应用高耐增塑作用的化学交联聚合物膜,例如交联乙酸纤维素(CA)膜。 这些具有共价互聚链连接的刚性网络的交联聚合物膜在690kPa(100psig)纯二氧化碳压力下没有显示CO 2 / CH 4理想选择性的降低,并且也没有CO2增塑达3447kPa(500psig)纯二氧化碳压力 。 通过使用如本发明所述的化学交联方法,可以确定地提高聚合物膜的分离特性。 这些新的交联聚合物膜不仅可用于气体分离,如CO2 / CH4和CO2 / N2分离,O2 / N2分离,烯烃/石蜡分离(如丙烯/丙烷分离),异/正链烷烃分离,但 还用于液体分离,例如渗透蒸发和脱盐。

    Microporous UZM-5 inorganic zeolite membranes for gas, vapor, and liquid separations
    50.
    发明授权
    Microporous UZM-5 inorganic zeolite membranes for gas, vapor, and liquid separations 失效
    用于气体,蒸汽和液体分离的微孔UZM-5无机沸石膜

    公开(公告)号:US08540800B2

    公开(公告)日:2013-09-24

    申请号:US13052720

    申请日:2011-03-21

    IPC分类号: B01D53/22 B01D71/02

    摘要: The present invention discloses microporous UZM-5 zeolite membranes, methods for making the same, and methods of separating gases, vapors, and liquids using the same. The small-pore microporous UZM-5 zeolite membrane is prepared by two different methods, including in-situ crystallization of one or more layers of UZM-5 zeolite crystals on a porous membrane support, and a seeding method by in-situ crystallization of a continuous second layer of UZM-5 zeolite crystals on a seed layer of UZM-5 zeolite crystals supported on a porous membrane support. The membranes in the form of disks, tubes, or hollow fibers have superior thermal and chemical stability, good erosion resistance, high CO2 plasticization resistance, and significantly improved selectivity over polymer membranes for gas, vapor, and liquid separations.

    摘要翻译: 本发明公开了微孔UZM-5沸石膜,其制造方法,以及使用其分离气体,蒸汽和液体的方法。 小孔微孔UZM-5沸石膜通过两种不同的方法制备,包括在多孔膜载体上的一层或多层UZM-5沸石晶体的原位结晶,以及通过原位结晶的接种方法 在支撑在多孔膜载体上的UZM-5沸石晶种的种子层上连续的第二层UZM-5沸石晶体。 圆盘,管或中空纤维形式的膜具有优异的热稳定性和化学稳定性,良好的抗侵蚀性,高的二氧化碳抗塑化性,并且对于气体,蒸汽和液体分离,在聚合物膜上显着提高了选择性。