Process for producing pure ammonium perrhenate
    8.
    发明授权
    Process for producing pure ammonium perrhenate 有权
    生产纯高铼酸铵的方法

    公开(公告)号:US08795509B2

    公开(公告)日:2014-08-05

    申请号:US12996016

    申请日:2009-04-29

    摘要: A process for preparing a pure ammonium perrhenate includes producing a first aqueous suspension containing an ammonium perrhenate. A stoichiometric amount of a nitric acid is added to the first aqueous suspension so as to produce a second suspension. The second suspension is introduced into a cathode space of an electrolysis cell. The electrolysis cell is divided by a cation-exchange membrane into the cathode space and an anode space. The nitric acid is cathodically reduced to a nitrous acid in the cathode space by applying an electric potential. The nitrous acid is reacted with ammonium ions of the ammonium perrhenate so as to form an aqueous perrhenic acid. Potassium ions are removed from the aqueous perrhenic acid. At least a stoichiometric amount of ammonia is added to the aqueous perrhenic acid so as to produce the pure ammonium perrhenate.

    摘要翻译: 制备纯高铼酸铵的方法包括制备含有高铼酸铵的第一含水悬浮液。 向第一水性悬浮液中加入化学计量的硝酸,以产生第二悬浮液。 将第二悬浮液引入电解池的阴极空间。 电解池被阳离子交换膜分成阴极空间和阳极空间。 通过施加电势,硝酸在阴极空间中被阴极还原成亚硝酸。 亚硝酸与高铼酸铵的铵离子反应,形成高铼酸水溶液。 从高铼酸水溶液中除去钾离子。 将至少一种化学计量的氨加入到高铼酸水溶液中,以产生纯高铼酸铵。

    PROCESS FOR PRODUCING PURE AMMONIUM PERRHENATE
    9.
    发明申请
    PROCESS FOR PRODUCING PURE AMMONIUM PERRHENATE 有权
    生产纯玉米浆的方法

    公开(公告)号:US20110123709A1

    公开(公告)日:2011-05-26

    申请号:US12996016

    申请日:2009-04-29

    IPC分类号: C01G47/00 B05D5/12 C22B11/00

    摘要: A process for preparing a pure ammonium perrhenate includes producing a first aqueous suspension containing an ammonium perrhenate. A stoichiometric amount of a nitric acid is added to the first aqueous suspension so as to produce a second suspension. The second suspension is introduced into a cathode space of an electrolysis cell. The electrolysis cell is divided by a cation-exchange membrane into the cathode space and an anode space. The nitric acid is cathodically reduced to a nitrous acid in the cathode space by applying an electric potential. The nitrous acid is reacted with ammonium ions of the ammonium perrhenate so as to form an aqueous perrhenic acid. Potassium ions are removed from the aqueous perrhenic acid. At least a stoichiometric amount of ammonia is added to the aqueous perrhenic acid so as to produce the pure ammonium perrhenate.

    摘要翻译: 制备纯高铼酸铵的方法包括制备含有高铼酸铵的第一含水悬浮液。 向第一水性悬浮液中加入化学计量的硝酸,以产生第二悬浮液。 将第二悬浮液引入电解池的阴极空间。 电解池被阳离子交换膜分成阴极空间和阳极空间。 通过施加电势,硝酸在阴极空间中被阴极还原成亚硝酸。 亚硝酸与高铼酸铵的铵离子反应,形成高铼酸水溶液。 从高铼酸水溶液中除去钾离子。 将至少一种化学计量的氨加入到高铼酸水溶液中,以产生纯高铼酸铵。