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    • 14. 发明授权
    • Supported inorganic membranes
    • 支持无机膜
    • US5772735A
    • 1998-06-30
    • US896716
    • 1997-07-18
    • Rakesh SehgalCharles Jeffrey Brinker
    • Rakesh SehgalCharles Jeffrey Brinker
    • B01D53/22B01D71/02B01J37/02
    • B01D67/0048B01D53/228B01D71/024B01D71/027B01J37/0246B01D2323/08B01D2325/04
    • Supported inorganic membranes capable of molecular sieving, and methods for their production, are provided. The subject membranes exhibit high flux and high selectivity. The subject membranes are substantially defect free and less than about 100 nm thick. The pores of the subject membranes have an average critical pore radius of less than about 5 .ANG., and have a narrow pore size distribution. The subject membranes are prepared by coating a porous substrate with a polymeric sol, preferably under conditions of low relative pressure of the liquid constituents of the sol. The coated substrate is dried and calcined to produce the subject supported membrane. Also provided are methods of derivatizing the surface of supported inorganic membranes with metal alkoxides. The subject membranes find use in a variety of applications, such as the separation of constituents of gaseous streams, as catalysts and catalyst supports, and the like.
    • 提供了能够进行分子筛的负载型无机膜及其制造方法。 主题膜表现出高通量和高选择性。 主体膜基本上无缺陷且小于约100nm厚。 目标膜的孔的平均临界孔半径小于约5,具有窄的孔径分布。 通过用聚合物溶胶涂覆多孔基材,优选在溶胶的液体组分的相对压力低的条件下制备目标膜。 将涂覆的基底干燥并煅烧以产生受试者支撑的膜。 还提供了用金属醇盐衍生负载的无机膜的表面的方法。 本发明的膜可用于各种应用,例如气流成分的分离,作为催化剂和催化剂载体等。