Electrochemical half-cell
    82.
    发明授权
    Electrochemical half-cell 有权
    电化学半电池

    公开(公告)号:US07691242B2

    公开(公告)日:2010-04-06

    申请号:US12141399

    申请日:2008-06-18

    IPC分类号: C25B9/08

    CPC分类号: C25B9/08 C25B9/04 C25B11/035

    摘要: The present invention describes an electrochemical half-cell, comprising a gas space, an electrolyte space and a gas diffusion electrode in the form of a cathode or anode. The gas diffusion electrode separates the gas space from the electrolyte space and comprises an electrically conductive substrate and an electrochemically active coating. The gas diffusion electrode includes a coating-free edge region and is connected to a support structure in the coating-free edge region via an electrically conductive plate, which covers at least the coating-free edge region as well as a coated edge region.

    摘要翻译: 本发明描述了一种电化学半电池,包括气体空间,电解质空间和阴极或阳极形式的气体扩散电极。 气体扩散电极将气体空间与电解质空间分离,并且包括导电基底和电化学活性涂层。 气体扩散电极包括无涂层的边缘区域,并且经由导电板连接到无涂层边缘区域中的支撑结构,导电板至少覆盖无涂层边缘区域以及涂覆的边缘区域。

    Electrolysis cell, especially for electrochemical production of chlorine
    83.
    发明授权
    Electrolysis cell, especially for electrochemical production of chlorine 有权
    电解池,特别用于电化学生产氯

    公开(公告)号:US07329331B2

    公开(公告)日:2008-02-12

    申请号:US10491621

    申请日:2002-09-19

    IPC分类号: C25B9/12

    CPC分类号: C25B9/08 C25B9/02

    摘要: An electrolysis cell, suitable for the electrochemical production of chlorine from aqueous solutions of hydrogen chloride. The cell preferably comprises an anode space formed from an anode, an anode frame, and a back wall, the anode frame supporting the anode, and the anode space having an inlet and an outlet for the electrolyte, a cathode space formed from a current collector. The cell further preferably comprises a cathode frame and a back wall, the cathode frame supporting the current collector and the cathode space having an inlet and an outlet for the gas, a gas diffusion electrode arranged between anode and current collector and an cation exchange membrane arranged between anode and gas diffusion electrode, wherein the gas diffusion electrode is fixed on the current collector.

    摘要翻译: 一种电解槽,适用于从氯化氢水溶液中电化学生成氯。 电池优选地包括由阳极,阳极框架和后壁形成的阳极空间,阳极框架支撑阳极,阳极空间具有用于电解质的入口和出口,由集电器形成的阴极空间 。 电池还优选包括阴极框架和后壁,支撑集电器的阴极框架和具有用于气体的入口和出口的阴极空间,布置在阳极和集电器之间的气体扩散电极和布置在阳极和集电器之间的阳离子交换膜 在阳极和气体扩散电极之间,其中气体扩散电极固定在集电器上。

    Electrolysis cell, in particular for the electrochemical preparation of chlorine
    84.
    发明授权
    Electrolysis cell, in particular for the electrochemical preparation of chlorine 失效
    电解池,特别用于电化学制备氯气

    公开(公告)号:US06841047B2

    公开(公告)日:2005-01-11

    申请号:US10214480

    申请日:2002-08-02

    CPC分类号: C25B9/08 C25B1/26 C25B9/04

    摘要: The invention relates to an electrolysis cell comprising an anode frame (26), an anode (24), a cation-exchange membrane (34), a gas diffusion electrode (32), a current collector (10) and a cathode frame (12), with the anode (24), the cation-exchange membrane (34), the gas diffusion electrode (32) and the current collector (10) being held together elastically so that there is no gap between the individual components anode (24), cation-exchange membrane (34), gas diffusion electrode (32) and current collector (10). The elastic cohesion is preferably achieved by the current collector (10) being elastically fastened to the cathode frame (12) and/or the anode (24) being elastically fastened to the anode frame (26).

    摘要翻译: 本发明涉及一种电解池,包括阳极框架(26),阳极(24),阳离子交换膜(34),气体扩散电极(32),集电器(10)和阴极框架 ),阳极(24),阳离子交换膜(34),气体扩散电极(32)和集电体(10)被弹性地保持在一起,使得各个部件阳极(24)之间不存在间隙, 阳离子交换膜(34),气体扩散电极(32)和集电体(10)。 优选地,弹性内聚力通过弹性地紧固到阴极框架(12)和/或阳极(24)弹性地紧固到阳极框架(26)上的集流器(10)来实现。

    Method for producing gas diffusion electrodes
    85.
    发明授权
    Method for producing gas diffusion electrodes 有权
    气体扩散电极的制造方法

    公开(公告)号:US06838408B2

    公开(公告)日:2005-01-04

    申请号:US10815711

    申请日:2004-04-02

    摘要: A method for producing gas diffusion electrodes, in particular for use in electrolysis cells, as well as electrodes and their uses are described. A method of the present invention involves first, a sheet-like structure is produced by means of a pair of rolls by rolling a powder mixture containing at least one catalyst or a catalyst mixture and a binder, and then the sheet-like structure is connected to an electrically conductive catalyst support by rolling by means of a pair of rolls. In one embodiment the clamping force of the rolls is preferably kept constant in the range from 0.2 kN/cm to 15 kN/cm.

    摘要翻译: 描述了特别用于电解槽中的气体扩散电极的制造方法以及电极及其用途。 本发明的方法首先涉及通过轧制含有至少一种催化剂,催化剂混合物和粘合剂的粉末混合物的一对辊来制造片状结构,然后连接片状结构体 通过一对辊轧制成导电催化剂载体。 在一个实施例中,辊的夹紧力优选保持在0.2kN / cm至15kN / cm的范围内恒定。

    Process for preparing hydrogen fluoride in a rotary tube furnace
    86.
    发明授权
    Process for preparing hydrogen fluoride in a rotary tube furnace 有权
    在旋转管式炉中制备氟化氢的方法

    公开(公告)号:US06699455B2

    公开(公告)日:2004-03-02

    申请号:US09891930

    申请日:2001-06-26

    IPC分类号: C01B719

    CPC分类号: C01B7/192

    摘要: The invention relates to a novel process for preparing hydrogen fluoride in a uniformly high conversion at a high space-time yield with minimal energy consumption by reaction of fluorspar with sulfuric acid in a rotary tube furnace, in which the furnace is divided into three equal-sized zones, each of which is heated indirectly by means of from 1 to 12 independent combustion chambers, there being a temperature gradient between the zones such that the first zone has the highest temperature and the third zone has the lowest temperature.

    摘要翻译: 本发明涉及一种通过在旋转管式炉中与硫酸反应而以高的时空产率以最小的能量消耗以均匀高的转化率制备氟化氢的新方法,其中将炉子分成三个相等的, 每个区域通过1至12个独立的燃烧室间接加热,在这些区域之间存在温度梯度,使得第一区域具有最高温度,第三区域具有最低温度。

    Process for the preparation of sodium fluoride
    87.
    发明授权
    Process for the preparation of sodium fluoride 失效
    氟化钠的制备方法

    公开(公告)号:US6106794A

    公开(公告)日:2000-08-22

    申请号:US364601

    申请日:1999-07-30

    IPC分类号: A61K8/21 A61Q11/00 C01D3/02

    CPC分类号: C01D3/02

    摘要: Process for the preparation of sodium fluoride from sodium hydroxide solution and hydrogen fluoride, characterized in that at least 45% strength by weight, in particular 50% strength by weight, sodium hydroxide solution and anhydrous hydrogen fluoride are introduced separately into a saturated NaF solution in which 4 to 50% by weight, preferably 5 to 30% by weight, solid NaF are suspended and the temperature of which is in the range from 20 to 80.degree. C., preferably 30 to 60.degree. C.

    摘要翻译: 用于从氢氧化钠溶液和氟化氢制备氟化钠的方法,其特征在于将氢氧化钠溶液和无水氟化氢的至少45重量%,特别是50重量%的重量,分别引入饱和的NaF溶液中 其中固体NaF为4〜50重量%,优选为5〜30重量%,其温度为20〜80℃,优选为30〜60℃。

    Method of operating an oxygen-consuming electrode
    88.
    发明授权
    Method of operating an oxygen-consuming electrode 有权
    操作耗氧电极的方法

    公开(公告)号:US09422631B2

    公开(公告)日:2016-08-23

    申请号:US13406600

    申请日:2012-02-28

    IPC分类号: C25B15/02 C25B1/46 C25B1/26

    CPC分类号: C25B1/46 C25B1/26 C25B15/02

    摘要: The present invention relates to a method of operating an oxygen-consuming electrode as cathode for the electrolysis of alkali metal chlorides or hydrochloric acid, in an electrochemical cell, comprising feeding an oxygen-containing process gas to the electrode, wherein the oxygen-containing process gas is at least partly heated using a heat source from the electrolysis before contact with the oxygen-consuming electrode to a temperature which corresponds to not more than the temperature of the cathode space in the cell or is less than 50° C. below the temperature of the cathode space in the cell.

    摘要翻译: 本发明涉及一种在电化学电池中操作耗氧电极作为用于电解碱金属氯化物或盐酸的阴极的方法,包括将含氧工艺气体供给到电极,其中含氧过程 在与耗氧电极接触之前,使用来自电解的热源至少部分地加热气体,其温度对应于不高于电池中阴极空间的温度或低于温度低于50℃ 的电池中的阴极空间。

    OXYGEN-CONSUMING ELECTRODE AND PROCESS FOR PRODUCTION THEREOF
    89.
    发明申请
    OXYGEN-CONSUMING ELECTRODE AND PROCESS FOR PRODUCTION THEREOF 有权
    氧气消耗电极及其生产方法

    公开(公告)号:US20130075249A1

    公开(公告)日:2013-03-28

    申请号:US13625078

    申请日:2012-09-24

    摘要: An oxygen-consuming electrode is described, more particularly for use in chloralkali electrolysis, comprising a novel catalyst coating, as is an electrolysis apparatus. Also described is a production process for the oxygen-consuming electrode and the use thereof in chloralkali electrolysis or fuel cell technology. The oxygen-consuming electrode comprises at least an electrically conductive support, an electrical contact site and a gas diffusion layer comprising a catalytically active component, characterized in that the coating at least one fluorinated polymer, silver in the form of silver particles and silver oxide in the form of silver oxide particles, which is produced in a selected precipitation step.

    摘要翻译: 描述了一种耗氧电极,更具体地用于氯碱电解,包括新型催化剂涂层,电解装置也是如此。 还描述了耗氧电极的生产方法及其在氯碱电解或燃料电池技术中的应用。 所述耗氧电极至少包括导电支撑体,电接触部位和包含催化活性成分的气体扩散层,其特征在于,涂覆至少一种氟化聚合物,银颗粒和氧化银形式的银 在选择的沉淀步骤中生成的氧化银颗粒的形式。

    METHOD OF OPERATING AN OXYGEN-CONSUMING ELECTRODE
    90.
    发明申请
    METHOD OF OPERATING AN OXYGEN-CONSUMING ELECTRODE 有权
    使用氧气消耗电极的方法

    公开(公告)号:US20120222965A1

    公开(公告)日:2012-09-06

    申请号:US13406600

    申请日:2012-02-28

    IPC分类号: C25B1/26 C25C1/02 C25B1/02

    CPC分类号: C25B1/46 C25B1/26 C25B15/02

    摘要: The present invention relates to a method of operating an oxygen-consuming electrode as cathode for the electrolysis of alkali metal chlorides or hydrochloric acid, in an electrochemical cell, comprising feeding an oxygen-containing process gas to the electrode, wherein the oxygen-containing process gas is at least partly heated using a heat source from the electrolysis before contact with the oxygen-consuming electrode to a temperature which corresponds to not more than the temperature of the cathode space in the cell or is less than 50° C. below the temperature of the cathode space in the cell.

    摘要翻译: 本发明涉及一种在电化学电池中操作耗氧电极作为用于电解碱金属氯化物或盐酸的阴极的方法,包括将含氧工艺气体供给到电极,其中含氧过程 在与耗氧电极接触之前,使用来自电解的热源至少部分地加热气体,其温度对应于不高于电池中阴极空间的温度或低于温度低于50℃ 的电池中的阴极空间。