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    Hydroxylamine purification via cation exchange
    1.
    发明公开
    Hydroxylamine purification via cation exchange 失效
    Reinigung von Hydroxylamin durch Kationenaustausch。

    公开(公告)号：EP0001787A1

    公开(公告)日：1979-05-16

    申请号：EP78101180.4

    申请日：1978-10-19

    申请人： ALLIED CORPORATION

    发明人： Koff, Fred W. ,  Tunick, Allen Abraham ,  Sifniades, Stylianos ,  Belden, Reed H.

    IPC分类号： C01B21/14

    CPC分类号： C01B21/1445

    摘要： A process for separating hydroxylamine from an aqueous solution containing hydroxylammonium salts in mixture with salts of predominantly monovalent cations whose corresponding free bases have base , dissociation constants greater than 10 -7 . Said solution is passed through a bed of cation exchange resin loaded predominantly with monovalent cations hereby hydroxylammonium and the other cations in solution substantially displace said cations from the resin. A second aqueous solution containing a monovalent amine or hydroxide base of at least 0.5 molar concentration having a dissociation constant greater than 10 -7 is passed through the resin bed whereby hydroxylamine is preferentially released to the solution and the resin is correspondingly loaded with the cation of said base. Hydroxylammonium salts can be crystallized from the solution after addition of a stoichiometric amount of an appropriate acid.

    摘要翻译： 从含有羟基铵盐的水溶液中分离羟胺的方法与主要是一价阳离子的盐的混合物，其相应的游离碱具有大于10 -7的碱解离常数。 所述溶液通过主要以一价阳离子负载的阳离子交换树脂床，由此羟基铵和溶液中的其它阳离子基本上使树脂中的阳离子取代。 含有解离常数大于10 -7的至少0.5摩尔浓度的一价胺或氢氧化物碱的第二水溶液通过树脂床，由此羟胺优先释放到溶液中，并且树脂相应地加载 与所述碱的阳离子。 加入化学计量的合适的酸后，羟基铵盐可以从溶液中结晶出来。