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    Mixed matrix membranes with low silica-to-alumina ratio molecular sieves and methods for making and using the membranes
    8.
    发明授权
    Mixed matrix membranes with low silica-to-alumina ratio molecular sieves and methods for making and using the membranes 有权
    具有低二氧化硅 - 氧化铝比分子筛的混合基质膜以及制备和使用膜的方法

    公开(公告)号：US07138006B2

    公开(公告)日：2006-11-21

    申请号：US10745976

    申请日：2003-12-24

    申请人： Stephen J. Miller ,  Alexander Kuperman ,  De Q. Vu

    发明人： Stephen J. Miller ,  Alexander Kuperman ,  De Q. Vu

    IPC分类号： B01D53/22

    CPC分类号： B01D69/148 ,  B01D53/228 ,  B01D67/0079 ,  B01D71/024 ,  B01D71/025 ,  B01D71/028 ,  B01D71/06 ,  B01D71/64 ,  Y02C10/10 ,  Y10S55/05

    摘要： 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 (AlPO) 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. Finally, methods for making and using such mixed matrix membranes to separate gases from a mixture containing two or more gases are also disclosed.

    摘要翻译： 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（AlPO）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。 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。

    Process for removing aluminum contaminants from fischer-tropsch feed streams using dicarboxylic acid
    9.
    发明申请
    Process for removing aluminum contaminants from fischer-tropsch feed streams using dicarboxylic acid 有权
    使用二羧酸从费 - 托进料流中除去铝污染物的方法

    公开(公告)号：US20060006102A1

    公开(公告)日：2006-01-12

    申请号：US10886320

    申请日：2004-07-07

    申请人： Alexander Kuperman ,  Lucy Bull ,  Dennis O'Rear ,  Donald Kuehne

    发明人： Alexander Kuperman ,  Lucy Bull ,  Dennis O'Rear ,  Donald Kuehne

    IPC分类号： C10G17/00

    CPC分类号： C10G2/32 ,  C10G17/04

    摘要： A process for removing aluminum contaminants from the product of a Fischer-Tropsch synthesis reaction wherein said contaminants comprise at least 1 ppm of aluminum expressed as elemental metal in aluminum-containing contaminants having an effective diameter of less than 1 micron, said process comprising the steps of (a) collecting the contaminated Fischer-Tropsch product from the Fischer-Tropsch reactor; (b) forming a mixture comprising the contaminated Fischer-Tropsch product, at least an equal molar amount of a dicarboxylic acid containing from 2 to about 8 carbon atoms based upon the amount of aluminum present, and sufficient water for the dicarboxylic acid to form hydrogen ions; (c) maintaining the mixture under pre-selected conditions for a time sufficient for the aluminum contaminant and the dicarboxylic acid to form an aluminum containing precipitate having an effective diameter of greater than about 1 micron; (d) passing the mixture of step (c) through a particulate removal zone capable of removing substantially all of the aluminum-containing precipitate; and (e) recovering from the particulate removal zone a Fischer-Tropsch product containing less than about 1 ppm total aluminum.

    摘要翻译： 一种从费 - 托合成反应产物中除去铝污染物的方法，其中所述污染物包含至少1ppm铝，其表示为元素金属，其含铝有机污染物的有效直径小于1微米，所述方法包括步骤 （a）从费 - 托反应器收集受污染的费 - 托产品; （b）基于所存在的铝的量，形成包含受污染的费 - 托产物，至少等摩尔量的含有2至约8个碳原子的二羧酸的混合物，以及用于二羧酸形成氢的足够水 离子 （c）将混合物保持在预选条件下足以使铝污染物和二羧酸形成有效直径大于约1微米的含铝沉淀物的时间; （d）使步骤（c）的混合物通过能够去除基本上所有含铝沉淀物的颗粒去除区; 和（e）从颗粒去除区回收含有小于约1ppm总铝的费 - 托产品。