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    • 59. 发明申请
    • MIXED MATRIX MEMBRANES WITH LOW SILICA-TO-ALUMINA RATIO MOLECULAR SIEVES AND METHODS FOR MAKING AND USING THE MEMBRANES
    • 具有低二氧化硅 - 铝氧化物比例分子筛的混合基质膜及其制备和使用膜的方法
    • WO2005065152A3
    • 2006-01-05
    • PCT/US2004041568
    • 2004-12-10
    • CHEVRON USA INCMILLER STEPHEN JKUPERMAN ALEXANDERVU DE Q
    • MILLER STEPHEN JKUPERMAN ALEXANDERVU DE Q
    • B01D53/22B01D67/00B01D69/14B01D71/02B01D71/06B01D71/64
    • B01D69/148B01D53/228B01D67/0079B01D71/024B01D71/025B01D71/028B01D71/06B01D71/64Y02C10/10Y10S55/05
    • A mixed matrix membrane is provided which comprises a continuous phase organic polymer and small pore alumina containing molecular sieves dispersed therein. The molecular sieves have a silica-to-alumina molar ratio of less than 1.0, more preferably, less than 0.3, and most preferably less than 0.1. In some cases, the molecular sieves have no appreciable amounts of silica. Exemplary compositions include aluminophosphates (AIPO) and silicoaluminophosphates (SAPO). When these molecular sieves are properly interspersed with a continuous phase polymer, the membrane will exhibit a mixed matrix membrane effect, i.e., a selectivity increase of at least 10% relative to a neat membrane containing no molecular sieves. The molecular sieves have pores with a largest minor crystallographic free diameter of 4.0 Angstroms or less. The molecular sieves may be selected from the group having IZA structure types including AEI, CHA, ERI, LEV, AFX, AFT, and GIS. Examples of preferred molecular sieves include: AIPO-18, SAPO-18, AIPO­-34, SAPO-34, SAPO-44, SAPO-47, AIPO-17, SAPO-17, CVX-7, SAPO-35, SAPO-56, ALPO-52, and SAPO-43. Finally, methods for making and using such mixed matrix membranes to separate gases from a mixture containing two or more gases are also disclosed.
    • 提供了一种混合基质膜,其包含连续相有机聚合物和分散在其中的分子筛的小孔氧化铝。 分子筛的二氧化硅与氧化铝的摩尔比小于1.0,更优选小于0.3,最优选小于0.1。 在某些情况下,分子筛没有明显量的二氧化硅。 示例性组合物包括铝磷酸盐(AIPO)和硅铝磷酸盐(SAPO)。 当这些分子筛适当地散布有连续相聚合物时,膜将表现出混合的基质膜效应,即相对于不含分子筛的纯净膜的选择性增加至少为10%。 分子筛具有最小次晶界自由直径为4.0埃或更小的孔。 分子筛可以选自包括AEI,CHA,ERI,LEV,AFX,AFT和GIS的IZA结构类型的组。 优选的分子筛的实例包括:AIPO-18,SAPO-18,AIPO-34,SAPO-34,SAPO-44,SAPO-47,AIPO-17,SAPO-17,CVX-7,SAPO-35,SAPO-56 ,ALPO-52和SAPO-43。 最后,还公开了制造和使用这种混合基质膜从含有两种或多种气体的混合物中分离气体的方法。