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    • 23. 发明授权
    • Proton ionizable macrocyclic compounds
    • 质子离子化大环化合物
    • US4960882A
    • 1990-10-02
    • US283610
    • 1988-12-12
    • Jerald S. BradshawReed M. IzattVirginia B. Christensen
    • Jerald S. BradshawReed M. IzattVirginia B. Christensen
    • C07D498/08C07F9/6574
    • C07D498/08C07F9/65742
    • The invention relates to a composition of matter comprising compounds selected from the class consisting of ##STR1## and ##STR2## This process can be carried out in these ways: (A) as ligands in a liquid membrane phase for selectively; and competitively separating desired metal ions from mixtures with other ions in a separate source phase and transporting these ions to a separate receiving phase, with both of which the liquid membrane phase is in interfacial contact long enough to effect substantial removal of the desired ions from the source phase and transporting them to the receiving phase from which they are recovered, (B) as covalently bonded to silica gel supported in a column through which the multiple ion solution is first flowed, followed by receiving liquid, and (C) as ligand in an organic liquid filling pores or apertures in the wall of a hollow fiber in a bundle of hollow fibers on opposite sides of which flow the multiple ion solution and the receiving liquid.
    • 本发明涉及一种物质组合物,其包含选自下列的化合物:其中X = O和S; n =从-1到3的整数,包括1和3; R = C6-18H13-37 其中n = -1至3的整数,包括端值; R = C6-18H13-37 其中n = 1至4的整数,包括1和4; R = C6-18H13-37和,其中X = O和S; n =从-1到3的整数,包括1和3; R1 = H和阻断剂; R2 = CH2OCH2CHCH2,CH2O(CH2)3Si(R3)2Cl,CH2O(CH2)3Si(R4)2O硅胶; R3 = CH3和C1; R4 = CH3和O SILICA GEL 其中X = O和S; n =从-1到3的整数,包括1和3; R1 = H和阻断剂; R2 = CH2OCH2CHCH2,CH2O(CH2)3Si(R3)2Cl,CH2O(CH2)3Si(R4)2O硅胶; R3 = CH3和C1; R4 = CH3和O SILICA GEL n = 1-4的整数,包括1和4; R1 = H和阻断剂; R2 = CH2OCH2CHCH2,CH2O(CH2)3Si(R3)2Cl,CH2O(CH2)3Si(R4)2O硅胶; R3 = CH3和C1; R4 = CH3和O二氧化硅凝胶该方法可以通过以下方式进行:(A)作为液膜相中的配体选择性地进行; 并且将所需的金属离子与其它离子的混合物竞争分离在单独的来源相中并将这些离子输送到单独的接收相,其中液体膜相两者的界面接触足够长以实现从 源极相并将其输送到从其回收的接收相,(B)共价键合到支撑在多个离子溶液首先流过的柱中的硅胶,然后接受液体,和(C)作为配体 有机液体填充中空纤维壁中的中空纤维壁中的孔或孔,中空纤维束的相对侧上流动多个离子溶液和接收液体。
    • 24. 发明授权
    • Recovery of cesium
    • 回收铯
    • US4477377A
    • 1984-10-16
    • US389402
    • 1982-06-17
    • Reed M. IzattJames J. ChristensenRichard T. Hawkins
    • Reed M. IzattJames J. ChristensenRichard T. Hawkins
    • G21F9/00G21F9/04G21F9/12
    • G21F9/007
    • A process of recovering cesium ions from mixtures of ions containing them and other ions, e.g., a solution of nuclear waste materials, which comprises establishing a separate source phase containing such a mixture of ions, establishing a separate recipient phase, establishing a liquid membrane phase in interfacial contact with said source and recipient phases, said membrane phase containing a ligand, preferably a selected calixarene as depicted in the drawing, maintaining said interfacial contact for a period of time long enough to transport by said ligand a substantial portion of the cesium ion from the source phase to the recipient phase, and recovering the cesium ion from the recipient phase. The separation of the source and recipient phases may be by the membrane phase only, e.g., where these aqueous phases are emulsified as dispersed phases in a continuous membrane phase, or may include a physical barrier as well, e.g., an open-top outer container with an inner open-ended container of smaller cross-section mounted in the outer container with its open bottom end spaced from and above the closed bottom of the outer container so that the membrane phase may fill the outer container to a level above the bottom of the inner container and have floating on its upper surface a source phase and a recipient phase separated by the wall of the inner container as a physical barrier. A preferred solvent for the ligand is a mixture of methylene chloride and carbon tetrachloride.
    • 从含有它们的离子和其它离子的混合物(例如核废料材料)的混合物中回收铯离子的方法,其包括建立包含这种离子混合物的单独的源相,建立单独的接收相,建立液膜相 在与所述源和受体相的界面接触中,所述膜相含有配体,优选如图所示的选择的杯芳烃,将所述界面接触保持足够长的时间,以便通过所述配体输送大部分的铯离子 从源相到接收相,并从接收相中回收铯离子。 源和受体相的分离可以仅通过膜相,例如,当这些水相作为分散相乳化在连续的膜相中时,或者也可以包括物理屏障,例如开顶的外容器 其具有安装在外部容器中的较小横截面的内开口容器,其开口底端与外部容器的封闭底部间隔开并且位于外部容器的封闭底部之上,使得膜相可以将外部容器填充到位于 内部容器并且在其上表面上漂浮有源相和由内容器的壁分隔的接收体作为物理屏障。 配体的优选溶剂是二氯甲烷和四氯化碳的混合物。