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公开(公告)号：US5626730A
公开(公告)日：1997-05-06
申请号：US442768
申请日：1995-05-17
CPC分类号： C25D17/12
摘要： An electrode structure containing an insoluble metal electrode which is used as an electrode for the electrolysis of an acidic aqueous solution under a high current density is disclosed. An elastic electroconductive material, containing an expanded metal, having formed thereon a corrosion-resistant electroconductive coating, is disposed between an electroconductive electrode substrate and an electrode having on the surface thereof a coating of an electrode material. They are fixed by a detachable fixing device from the surface of the electrode. The electrode can be exchanged when fixing the electrode structure to the electrolytic cell.
摘要翻译： 公开了一种含有不溶性金属电极的电极结构，其用作在高电流密度下电解酸性水溶液的电极。 在其上形成有耐腐蚀导电涂层的含有膨胀金属的弹性导电材料设置在导电电极基板和在其表面上具有电极材料的涂层的电极之间。 它们通过可拆卸的固定装置从电极的表面固定。 当将电极结构固定到电解槽时，可以更换电极。
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公开(公告)号：US6159349A
公开(公告)日：2000-12-12
申请号：US185034
申请日：1998-11-03
申请人： Shuhei Wakita , Yoshinori Nishiki , Takayuki Shimamune , Yasuo Nakajima , Masaaki Katoh , Yoshiyuki Kawaguchi , Takahiro Ashida , Masaharu Uno
发明人： Shuhei Wakita , Yoshinori Nishiki , Takayuki Shimamune , Yasuo Nakajima , Masaaki Katoh , Yoshiyuki Kawaguchi , Takahiro Ashida , Masaharu Uno
CPC分类号： C02F1/4672 , C02F1/46109 , C02F1/722 , C02F2001/46142 , C02F2001/46166 , C02F2303/04
摘要： An electrolytic cell for producing a brine containing hydrogen peroxide is disclosed. Units for hydrogen peroxide production 3 and units for water electrolysis 2 are alternately arranged in the same electrolytic cell 1. Electrolysis is conducted while supplying hydrogen gas and oxygen gas generating in the respective water electrolysis units to a gas diffusion anode 11 and a gas diffusion cathode 13 of each unit for hydrogen peroxide production, to thereby obtain a brine containing hydrogen peroxide in a high concentration. Furthermore, because the anode of the hydrogen peroxide production units is a hydrogen gas diffusion anode having a reduced oxidizing ability, halogen ions contained in the seawater do not yield harmful halogenated organic substances.
摘要翻译： 公开了一种用于生产含有过氧化氢的盐水的电解池。 用于过氧化氢生产的单元3和水电解单元2交替地布置在同一电解槽1中。在将各个水电解单元中产生的氢气和氧气供应到气体扩散阳极11和气体扩散阴极 13单位用于过氧化氢生产，从而获得含有高浓度过氧化氢的盐水。 此外，由于过氧化氢生产单元的阳极是具有降低的氧化能力的氢气扩散阳极，所以在海水中所含的卤离子不产生有害的卤化有机物质。
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公开(公告)号：US5466347A
公开(公告)日：1995-11-14
申请号：US162761
申请日：1993-12-07
申请人： Takayuki Shimamune , Yasuo Nakajima
发明人： Takayuki Shimamune , Yasuo Nakajima
摘要： The present invention is intended to prevent the formation of impurities such as chlorate in electrolysis using the ion exchange membrane method, without resorting to the addition of hydrochloric acid to counter the migration of alkali hydroxide from the cathode compartment to the anode compartment. The method of the present invention includes feeding a portion of an aqueous solution of an alkali chloride (as the raw material) into an auxiliary electrolytic cell of the cation exchange membrane type in which the anode is a hydrogen gas electrode, thereby effecting electrolysis to generate hydrochloric acid in the anode compartment, and then feeding the hydrochloric acid-containing aqueous solution of alkali chloride into the main electrolytic cell, thereby neutralizing the alkali hydroxide which migrates from the cathode compartment. This method inherently forms hydrochloric acid in the system, obviating the need for having an additional facility for synthesis of hydrochloric acid, thus permitting the efficient production of alkali hydroxide and chlorine without the addition of hydrochloric acid.
摘要翻译： 本发明是为了防止使用离子交换膜法在电解中形成杂质如氯酸盐，而不需要加入盐酸以抵抗碱金属氢氧化物从阴极室向阳极室的迁移。 本发明的方法包括将碱性氯化物（作为原料）的水溶液的一部分供给到阳极为氢气电极的阳离子交换膜型的辅助电解槽中，进行电解以产生 盐酸在阳极室中，然后将含盐酸的氯化碱水溶液进料到主电解槽中，从而中和从阴极室迁移的碱金属氢氧化物。 该方法固有地在体系中形成盐酸，避免了需要另外的合成盐酸的设备，从而允许在不添加盐酸的情况下有效地生产碱金属氢氧化物和氯。
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4.发明授权Electrolytic cell and processes for producing alkali hydroxide and hydrogen peroxide 失效电解池和碱氢氧化物和过氧化氢的制备方法
公开(公告)号：US5437771A
公开(公告)日：1995-08-01
申请号：US196442
申请日：1994-02-15
摘要： The electrolytic cell 1 for producing alkali hydroxide or hydrogen peroxide is divided into the anode compartment 3 and the cathode compartment 4 by the cation exchange membrane 2. The cathode compartment 4 is further divided by the anion exchange membrane 6 into the solution compartment 7 containing a concentrated aqueous solution of alkali hydroxide and the gas compartment accommodating the gas cathode 8. The anion exchange membrane 6 prevents the gas cathode 8 from coming into direct or indirect contact with the aqueous solution of alkali hydroxide. This leads to the extended life of the gas cathode. The above-mentioned arrangement is effective in large-sized electrolytic cells. Thus, the present invention can be applied to industrial electrolysis which has never been achieved with the conventional gas electrode.
摘要翻译： 用于生产碱金属氢氧化物或过氧化氢的电解池1通过阳离子交换膜2分成阳极室3和阴极室4.阴极室4进一步被阴离子交换膜6分成溶液室7， 碱性氢氧化物的浓缩水溶液和容纳气体阴极8的气室。阴离子交换膜6防止气体阴极8与碱金属氢氧化物水溶液直接或间接接触。 这导致气体阴极的寿命延长。 上述布置在大尺寸电解槽中是有效的。 因此，本发明可以应用于以往的气体电极从未实现的工业电解。
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公开(公告)号：US6103299A
公开(公告)日：2000-08-15
申请号：US109597
申请日：1993-08-20
申请人： Takayuki Shimamune , Yasuo Nakajima
发明人： Takayuki Shimamune , Yasuo Nakajima
CPC分类号： C25B11/0478 , C25B11/041 , C25B11/0426 , C25B11/0484
摘要： An electrolytic electrode substrate comprises an electrically conductive substrate and, formed on the surface of the electrically conductive substrate, an oxide layer having a thickness of from 10 to 200 .mu.m, wherein the oxide in the oxide layer comprises a non-stoichiometric composition containing oxygen and at least one metal selected from the group consisting of titanium, tantalum, and niobium. An advantage of the electrode substrate is that it is stable when used in electrolytic processes involving a reversal of current flow. Further, the electrode substrate is stable in the presence of corrosive substances such as a fluorine.
摘要翻译： 电解电极基板包括导电基板，并且在导电基板的表面上形成厚度为10-200μm的氧化物层，其中氧化物层中的氧化物包含含氧的非化学计量组成 和选自钛，钽和铌中的至少一种金属。 电极基板的优点是当用于涉及电流反转的电解过程中时它是稳定的。 此外，电极基板在存在腐蚀性物质如氟的情况下是稳定的。
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公开(公告)号：US5766429A
公开(公告)日：1998-06-16
申请号：US659242
申请日：1996-06-05
CPC分类号： C25B11/035 , C25B1/46 , C25B9/08
摘要： An electrolytic cell for producing sodium hydroxide, etc., which is partitioned by an ion-exchange membrane into an anode chamber and a cathode chamber, wherein at least one of a anode and a cathode is closely contacted to the ion-exchange membrane to form a gas diffusion electrode, and a current supplying means having guides for removing sodium hydroxide, etc., formed at the surface of the gas diffusion electrode is disposed therein closely contacting the gas diffusion electrode. By having a current supplying means having removing guides, sodium hydroxide formed at the surface of the gas diffusion electrode is separated therefrom and removed, whereby the supply of the raw material gas and removal of the produced gas can be smoothly performed without clogging perforations of the gas diffusion electrode with the sodium hydroxide.
摘要翻译： 一种用于生产氢氧化钠等的电解池，其由离子交换膜分隔成阳极室和阴极室，其中阳极和阴极中的至少一个与离子交换膜紧密接触以形成 在气体扩散电极的表面形成有气体扩散电极和具有用于除去氢氧化钠等的引导件的电流供给装置配置在与气体扩散电极紧密接触的位置。 通过具有除去引导件的电流供给装置，在气体扩散电极的表面形成的氢氧化钠被分离并除去，从而可以顺利地进行原料气体的供给和产生的气体的除去，而不会堵塞 气体扩散电极与氢氧化钠。
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公开(公告)号：US5676808A
公开(公告)日：1997-10-14
申请号：US636148
申请日：1996-04-22
CPC分类号： H01M4/8605 , C25B11/03 , C25B11/035 , C25B9/08
摘要： An electrolytic cell for obtaining a caustic alkali by closely contacting a gas diffusion electrode comprising a gas-liquid permeable metal substrate and a gas-liquid permeable collector connected to the substrate to a cation-exchange membrane while supplying an oxygen-containing gas from the opposite side of the cation-exchange membrane. Grooves for taking out a liquid containing a caustic alkali are formed in the contact surface of the gas diffusion electrode with the cation-exchange membrane. By the formation of the grooves, clogging of the perforations of the gas diffusion electrode with the caustic alkali so formed is prevented, whereby the gas supply can be smoothly carried out and the electrolysis can be stably carried out without reducing the cell voltage.
摘要翻译： 一种用于通过将包含气液渗透性金属基板的气体扩散电极和与基板连接的气液渗透性集电体与阳离子交换膜紧密接触而获得苛性碱的电解槽，同时从相对的方向供给含氧气体 侧阳离子交换膜。 在气体扩散电极与阳离子交换膜的接触表面中形成用于取出含有苛性碱的液体的槽。 通过形成槽，防止气体扩散电极的穿孔与这样形成的苛性碱的堵塞，从而可以平稳地进行气体供给，并且可以在不降低电池电压的情况下稳定地进行电解。
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公开(公告)号：US5531875A
公开(公告)日：1996-07-02
申请号：US294046
申请日：1994-08-24
申请人： Takayuki Shimamune , Yasuo Nakajima
发明人： Takayuki Shimamune , Yasuo Nakajima
CPC分类号： C25B11/0484
摘要： There are provided an electrode substrate for electrolysis comprising an electrically conductive metallic base material and a coating layer having a thickness of from 10 to 200 .mu.m composed of a platinum group metal and partial oxides of a non-stoichiometric composition containing at least one kind of metal selected from the group consisting of titanium, tantalum and niobium, and oxygen formed on the surface of the base material and a method of producing the electrode substrate. The electrode substrate has a sufficient durability and a chemical stability under a high electric current density, and can be stably used for a long period of time for use under a cathodic polarization in an electrolysis, etc., with a positive-negative inversion, and the use in an electrolyte containing corrosive materials.
摘要翻译： 提供一种电解用电极基板，其特征在于，包括导电性金属基材和由铂族金属构成的厚度为10〜200μm的涂层，以及含有至少一种 选自钛，钽和铌的金属，以及形成在基材表面上的氧和制造电极基板的方法。 电极基板在高电流密度下具有足够的耐久性和化学稳定性，并且可以在电解等的阴极极化下长时间稳定地使用正负反转，并且 在含有腐蚀性物质的电解液中使用。
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公开(公告)号：US6113773A
公开(公告)日：2000-09-05
申请号：US166797
申请日：1998-10-06
CPC分类号： C02F1/46109 , C02F1/4672 , C02F1/722 , C02F2001/46133 , C02F2001/46138 , C02F2001/46166 , C02F2103/08 , C02F2301/022 , C02F2303/04
摘要： A seawater electrolysis apparatus for generating hydrogen peroxide from seawater by electrolysis to thereby treat the seawater. The seawater electrolysis apparatus comprises an electrolytic cell, a gas diffusion electrode partitioning the electrolytic cell into a gas chamber and an electrolysis chamber, an insoluble metal electrode disposed in the electrolysis chamber as an anode, an inlet and an outlet for passing seawater through the electrolysis chamber, an inlet for supplying an oxygen-containing gas to the gas chamber, and means for passing and diffusing at least part of the gas supplied to the gas chamber passing through the gas diffusion electrode and into the seawater, respectively.
摘要翻译： 一种用于通过电解从海水产生过氧化氢从而处理海水的海水电解装置。 海水电解装置包括电解池，将电解槽分隔成气室和电解室的气体扩散电极，设置在电解室中的不溶性金属电极作为阳极，通过电解使海水通过的入口和出口 室，用于向气室供给含氧气体的入口，以及用于使供给到通过气体扩散电极并进入海水的气室的至少一部分气体通过和扩散的装置。
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公开(公告)号：US5683567A
公开(公告)日：1997-11-04
申请号：US374092
申请日：1995-01-18
申请人： Takayuki Shimamune , Yasuo Nakajima
发明人： Takayuki Shimamune , Yasuo Nakajima
CPC分类号： C25B11/0478 , C25B11/16 , Y10S205/917
摘要： The present invention relates to an electrolytic electrode comprising a core material made of a valve metal, a dense electrically conductive tin oxide layer formed on the core material, an .alpha.-lead dioxide layer formed on the tin oxide layer, and a .beta.-lead dioxide layer formed on the .alpha.-lead dioxide layer. The present invention also relates to a method for preparing the electrolytic electrode.
摘要翻译： 电解电极技术领域本发明涉及一种电解电极，其包括由阀金属制成的芯材，在芯材上形成的致密导电氧化锡层，形成在氧化锡层上的α-二氧化碳层和β-二氧化碳 层形成在α-二氧化碳层上。 本发明还涉及一种电解电极的制备方法。
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