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14 条记录 (耗时 0.011 秒)

    Preparation of hydroxylammonium salts
    2.
    发明授权
    Preparation of hydroxylammonium salts 失效
    羟基铵盐的制备

    公开(公告)号：US4404176A

    公开(公告)日：1983-09-13

    申请号：US344615

    申请日：1982-02-01

    申请人： Otto-Alfred Grosskinsky ,  Elmar Frommer ,  Gunther Rapp, deceased ,  Erwin Thomas

    发明人： Otto-Alfred Grosskinsky ,  Elmar Frommer ,  Gunther Rapp, deceased ,  Erwin Thomas

    IPC分类号： C01B21/14

    CPC分类号： C01B21/1418

    摘要： A process for the preparation of hydroxylammonium salts by catalytic reduction of nitric oxide with hydrogen in a dilute aqueous solution of a mineral acid, in the presence of a suspended supported platinum catalyst, at elevated temperatures, wherein the reaction is carried out in a conventional manner, in one or more reaction zones, under superatmospheric pressure, and the exit gases produced are let down to a lower pressure, and are reacted, in a downstream reaction zone, with the reaction mixture, containing hydroxylammonium salt, the ammonium salt, the supported platinum catalyst and residual mineral acid, from the upstream reaction zone or zones, or with a fresh aqueous solution of the mineral acid, which contains the supported platinum catalyst in suspension.

    摘要翻译： 在悬浮的负载型铂催化剂的存在下，在升高的温度下，通过在无机酸的稀的水溶液中用氢气将一氧化氮催化还原，制备羟基铵盐的方法，其中反应以常规方式进行 在一个或多个反应区域中，在超大气压下，将所产生的出口气体降低至较低压力，并在下游反应区域与反应混合物反应，该反应混合物含有羟基铵盐，铵盐，负载的 铂催化剂和残余无机酸，来自上游反应区或区域，或与无机酸的新鲜水溶液混合，其中含有负载的铂催化剂悬浮液。

    Purification of caprolactam
    9.
    发明授权
    Purification of caprolactam 失效
    己内酰胺的纯化

    公开(公告)号：US4301073A

    公开(公告)日：1981-11-17

    申请号：US160308

    申请日：1980-06-17

    申请人： Hugo Fuchs ,  Otto-Alfred Grosskinsky ,  Elmar Frommer ,  Klaus Kartte

    发明人： Hugo Fuchs ,  Otto-Alfred Grosskinsky ,  Elmar Frommer ,  Klaus Kartte

    IPC分类号： C07D201/02 ,  C07D201/16 ,  C07D223/10

    CPC分类号： C07D201/16

    摘要： A process for purifying caprolactam, which has been obtained by a Beckmann rearrangement, by extracting crude caprolactam with solvents, distilling the extract in the presence of alkali, and isolating pure caprolactam, wherein, in a first stage, caprolactam is distilled from the alkaline distillation residue at a bottom temperature of 130.degree.-160.degree. C., and is recycled to the distillation stage, the residue thus obtained is distilled, in a second stage, at a bottom temperature of 140.degree.-180.degree. C., and the distillate is treated with strongly acidic agents in a third stage and is then recycled to the extraction stage.

    摘要翻译： 一种通过贝克曼重排获得的己内酰胺的纯化方法，用溶剂萃取粗己内酰胺，在碱存在下蒸馏提取物，并分离纯己内酰胺，其中在第一阶段中，从碱性蒸馏中蒸馏己内酰胺 残余物在130℃-160℃的底部温度下再循环至蒸馏阶段，所得残余物在第二阶段在140-180℃的底部温度下蒸馏，馏出物 在第三阶段用强酸性剂处理，然后再循环至萃取阶段。

    Working-up of reaction mixtures containing cyclohexanol and cyclohexanone
    10.
    发明授权
    Working-up of reaction mixtures containing cyclohexanol and cyclohexanone 失效
    含有环己醇和环己酮的反应混合物的处理

    公开(公告)号：US4163027A

    公开(公告)日：1979-07-31

    申请号：US844985

    申请日：1977-10-25

    申请人： Peter Magnussen ,  Guenter Herrmann ,  Elmar Frommer

    发明人： Peter Magnussen ,  Guenter Herrmann ,  Elmar Frommer

    IPC分类号： C07C20060101 ,  C07C27/12 ,  C07C27/26 ,  C07C35/08 ,  C07C49/303 ,  C07C49/403 ,  C07C29/24 ,  C07C45/24

    摘要： A process for working up reaction mixtures containing cyclohexanol and cyclohexanone, which have been obtained by oxidizing cyclohexane with molecular oxygen or gases containing molecular oxygen, in the liquid phase, at from 130.degree. to 200.degree. C. under a pressure of from 5 to 25 bars, working-up being effected by treatment with aqueous solutions of an alkali metal hydroxide and/or alkali metal carbonate in two stages, the fresh aqueous alkali metal hydroxide and/or alkali metal carbonate solution being fed to the second stage and the separated-off spent alkali being brought into contact with fresh reaction mixture in the first stage. The treatment in the first stage is carried out in the presence of inert gases and the inert gases are separated off before the second stage.

    摘要翻译： 在液相中在130〜200℃下，在5〜25的压力下，通过用分子氧或含有分子氧的气体氧化环己烷而得到的含有环己醇和环己酮的反应混合物的方法 通过两步处理碱金属氢氧化物和/或碱金属碳酸盐的水溶液进行后处理，将新鲜的碱金属氢氧化物和/或碱金属碳酸盐水溶液进料到第二阶段， 在第一阶段使废碱与新鲜的反应混合物接触。 第一阶段的处理是在惰性气体的存在下进行的，惰性气体在第二阶段之前被分离出来。