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    • 7. 发明公开
    • Electrochemical process for purifying hydroxide compounds
    • Elektrochemisches Verfahren zur Reinigung von Hydroxid-Verbindungen
    • EP0834345A2
    • 1998-04-08
    • EP97307819.9
    • 1997-10-03
    • Sachem, Inc.
    • Sharifian, HossienMooney, John E.
    • B01D61/44C01B13/16C01D1/40C07C209/84C25B3/00
    • C07C209/84B01D61/44B01D61/445C07C211/63
    • In one embodiment, the invention relates to a process for purifying solutions containing a hydroxide compound, including the steps of: (A) providing an electrochemical cell containing an anode, a cathode, a cation selective membrane and an anion selective membrane, wherein the cation selective membrane is positioned between the cathode and the anion selective membrane, and the anion selective membrane is positioned between the cation selective membrane and the anode, thereby defining a feed compartment between the cation selective membrane and the anion selective membrane, a recovery compartment between the cathode and the cation selective membrane, and a water compartment between the anion selective membrane and the anode; (B) charging a solution of an ionic compound at a first concentration to the water compartment, and water to the recovery compartment; (C) charging a solution of the hydroxide compound at a second concentration to the feed compartment; (D) passing a current through the cell to produce the hydroxide compound at a third concentration in the recovery compartment; and (E) recovering hydroxide compound from the recovery compartment.
    • 包含氢氧化物化合物的净化溶液包括:(A)提供包含阳极,阴极,阳离子选择性膜和阴离子选择性膜的电化学电池,其中阳离子选择性膜位于阴极和阴离子选择性膜之间, 阴离子选择性膜位于阳离子选择性膜和阳极之间,从而在阳离子选择性膜和阴离子选择性膜之间限定进料室,阴极和阳离子选择性膜之间的回收室和阴离子选择性膜之间的水室 和阳极; (B)将第一浓度的离子化合物的溶液装入水室,并将水加到回收室; (C)将第二浓度的氢氧化合物溶液加到进料室; (D)使电流通过电池以在回收室中产生第三浓度的氢氧化物; 和(E)从回收室回收氢氧化物。 还声称是净化含有季铵盐的溶液。 氢氧化铵。