利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

38 条记录 (耗时 0.01 秒)

    Methods of purifying hydroxylamine solutions and converting hydroxylamine salts to hydroxylamine
    33.
    发明公开
    Methods of purifying hydroxylamine solutions and converting hydroxylamine salts to hydroxylamine 失效
    纯化羟胺溶液并将羟胺盐转化为羟胺的方法

    公开(公告)号：EP0870532A3

    公开(公告)日：1998-11-11

    申请号：EP98302671.7

    申请日：1998-04-06

    申请人： Sachem, Inc.

    发明人： Sharifian, Hossein ,  Shay, Christopher D.

    IPC分类号： B01D61/44 ,  C07C209/84 ,  C25B3/00

    CPC分类号： C01B21/1445 ,  B01D61/44 ,  B01D61/445 ,  C01B21/1481

    摘要： In one embodiment, the present invention provides a method of preparing hydroxylamine from a hydroxylammonium salt solution, including 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 an acid compartment between the anion selective membrane and the anode; charging a first solution to the acid compartment and a second solution the recovery compartment; charging the hydroxylammonium salt solution to the feed compartment; passing a current through the cell to produce hydroxylamine in the recovery compartment; and recovering hydroxylamine from the recovery compartment.

    摘要翻译： 在一个实施方案中，本发明提供了从羟基铵盐溶液制备羟胺的方法，包括提供包含阳极，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 阴离子选择膜和阴离子选择膜，并且阴离子选择膜位于阳离子选择膜和阳极之间，由此限定阳离子选择膜和阴离子选择膜之间的进料室，阴极和阳离子选择膜之间的回收室 以及阴离子选择膜和阳极之间的酸室; 将第一溶液装入所述酸室并将第二溶液装入所述回收室; 将羟铵盐溶液加入进料室; 使电流流过电池在回收室中产生羟胺; 并从回收室回收羟胺。

    PROCESS FOR MAKING HIGH PURITY HYDROXYLAMMONIUM NITRATE.
    35.
    发明公开
    PROCESS FOR MAKING HIGH PURITY HYDROXYLAMMONIUM NITRATE. 失效
    VERFAHREN ZUR HERSTELLUNG VON HOCHREINEM HYDROXYLAMMONIUMNITRAT。

    公开(公告)号：EP0603382A4

    公开(公告)日：1995-01-04

    申请号：EP93916470

    申请日：1993-06-14

    申请人： THIOKOL CORP

    发明人： LEVINTHAL MICHAEL L ,  WILLER RODNEY L ,  PARK DENNIS J ,  BRIDGES RONNELLE

    IPC分类号： C01B21/20 ,  C01B21/14 ,  C06B31/00 ,  C06B47/00

    CPC分类号： C06B31/00 ,  C01B21/1445 ,  C01B21/1454 ,  C06B47/00

    摘要： The present invention concerns a method for making energetic oxidizer salts and solutions thereof, and in particular relates to processes for making aqueous solutions of hydroxylammonium nitrate in high purity suitable for use in making liquid gun propellants. The present alcohol-free process yields high purity alcohol-free hydroxylammonium nitrate by neutralizing an aqueous nitric acid solution (20-70 % wt./wt.) with an alcohol-free aqueous hydroxylamine solution at temeperatures ranging from above -50 C to above ambient to produce the desired alcohol-free aqueous hydroxylammonium nitrate solution in a usable concentration and in high purity. The process is economical, environmentally acceptable, and facile.

    摘要翻译： 本发明涉及一种制造高能氧化剂盐的方法及其溶液，具体涉及制备适用于制造液体火药推进剂的高纯度硝酸羟铵水溶液的方法。 本发明的无醇方法通过在不高于-50℃至高于-50℃的温度范围内用无醇羟胺水溶液中和硝酸水溶液（20-70重量/重量）而得到高纯度无醇羟基硝酸铵 以产生可用浓度和高纯度的所需无醇羟基硝酸铵水溶液。 这个过程是经济的，环保的，容易的。

    Process for reducing the acid content of hydroxylamine salt solutions and for preparing hydroxylamines from hydroxylamine salts
    36.
    发明公开
    Process for reducing the acid content of hydroxylamine salt solutions and for preparing hydroxylamines from hydroxylamine salts 失效
    一种用于降低Hydroxylaminsalzlösungen的用于从羟胺盐羟胺Herstelling酸度和方法的方法。

    公开(公告)号：EP0577100A1

    公开(公告)日：1994-01-05

    申请号：EP93110439.2

    申请日：1993-06-30

    申请人： SACHEM, INC.

    发明人： Sharifian, Hossein

    IPC分类号： C01B21/14 ,  B01D61/44

    CPC分类号： C01B21/1472 ,  B01D61/44 ,  C01B21/1445

    摘要： A process is described for reducing the acid content of a solution comprising a hydroxylamine salt and an acid, and the process is also useful for converting a hydroxylamine salt to a hydroxylamine. In one embodiment, the process of the present invention comprises the steps of:

    (A) providing an electrolysis cell comprising an anolyte compartment containing an anode, a catholyte compartment containing an oxygen-consuming cathode, and an anionic membrane divider separating said compartments;
    (B) providing an aqueous solution comprising an acid and water in the anolyte compartment, and an aqueous solution comprising the hydroxylamine salt, water and optionally, an acid in the catholyte compartment;
    (C) charging an oxygen-containing gas to the catholyte compartment;
    (D) passing a direct current through the electrolysis cell for a period of time effective to reduce the acid content in the catholyte compartment and/or to convert the salt to a hydroxylamine; and
    (E) recovering a hydroxylamine or a hydroxylamine salt solution containing a reduced amount of acid from the catholyte compartment.

    摘要翻译： 方法描述用于减少溶液包括羟胺盐和酸的酸含量，并且该过程因此对于羟胺盐转化成羟胺是有用的。 在一个实施方案中，本发明的方法包括以下步骤：，一个阴极液室含有耗氧阴极中，在阴离子膜分隔分离所述隔室（A）在电解池阳极液室在包括提供含阳极; （B）提供在wässrige溶液在阳极室酸和水，其包括，在wässrige溶液包含羟胺的盐，水和任选的在阴极电解液室酸; （C）充电含氧气体到阴极电解液室的; （D）使直流电流通过电解池以有效减少在阴极电解液室中的酸含量的一段时间和/或成盐的羟胺转换; 和（e）回收羟胺或羟胺盐溶液从阴极电解液室的含酸的量减少。

    Hydroxylamine purification via cation exchange
    38.
    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。