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公开(公告)号：US5827412A
公开(公告)日：1998-10-27
申请号：US881361
申请日：1997-06-24
CPC分类号： C25B1/46 , C25B11/035
摘要： A liquid-permeable gas-diffusion cathode adapted for caustic soda electrolysis in contact with an ion-exchange membrane partitioning an electrolytic cell into an anode chamber and a cathode gas chamber. Plural horizontal concave grooves and/or convex portions are provided in an interval with one another on the surface of the gas-diffusion cathode facing the gas chamber. Plural vertical concave grooves may also be provided in an interval on the surface of the cathode crossing the horizontal grooves and/or convex portions. Aqueous caustic soda solution thus formed flows downward along the grooves, etc., without covering other portions of the cathode surface, and is easily released therefrom without clogging perforations in the gas-diffusion layer of the cathode.
摘要翻译： 一种液体可渗透的气体扩散阴极，其适于与将电解槽分隔成阳极室和阴极气体室的离子交换膜接触的苛性钠电解。 在面对气室的气体扩散阴极的表面上，间隔地设有多个水平凹槽和/或凸部。 也可以在与水平槽和/或凸部交叉的阴极表面上的间隔内设置多个垂直凹槽。 这样形成的碱性苛性钠溶液不会覆盖阴极表面的其它部分而沿着凹槽等向下流动，并且容易地从阴极的气体扩散层中堵塞穿孔而释放。
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公开(公告)号：US06113757A
公开(公告)日：2000-09-05
申请号：US12001
申请日：1998-01-22
摘要： An electrolytic cell for producing an alkali hydroxide using a gas diffusion cathode. A moistened oxygen-containing gas is uniformly supplied to the surface of the gas diffusion cathode by means of a gas distributing mechanism, such as at least one gas diffuser pipe having a plurality of openings facing the cathode surface.
摘要翻译： 一种使用气体扩散阴极生产碱性氢氧化物的电解槽。 润湿的含氧气体通过诸如至少一个具有面向阴极表面的多个开口的气体扩散管的气体分配机构均匀地供应到气体扩散阴极的表面。
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3.发明授权Gas-diffusion cathode and salt water electrolytic cell using the gas-diffusion cathode 失效使用气体扩散阴极的气体扩散阴极和盐水电解槽
公开(公告)号：US5879521A
公开(公告)日：1999-03-09
申请号：US922604
申请日：1997-09-03
CPC分类号： C25B9/08 , C25B11/035 , H01M4/8626
摘要： A gas-diffusion cathode disposed in contact with an ion-exchange membrane partitioning an electrolytic cell into an anode chamber and a cathode chamber, wherein at least one guide piece is disposed in the gas-diffusion cathode and a salt water electrolytic cell using the above-described gas-diffusion cathode. By using the above-described gas-diffusion cathode for salt water electrolysis, an aqueous caustic alkali solution formed descending in the direction of gravity in the cathode changes direction of movement by contact with a guide piece, whereby the decreased electrode performance resulting from the hindrance of the supply of raw material gas and the discharge of the gas formed caused by the retention of the descending caustic alkali solution is prevented and a large-sized electrolytic cell can be used without problems generally encountered in conventional electrolytic systems.
摘要翻译： 与将电解槽隔离成阳极室和阴极室的离子交换膜接触的气体扩散用阴极，其中，至少一个引导片设置在气体扩散阴极中，使用上述盐水电解池 描述的气体扩散阴极。 通过使用上述的用于盐水电解的气体扩散阴极，在阴极重力方向上下降的苛性碱水溶液通过与引导件接触而改变运动方向，由此产生的阻碍电极性能降低 的原料气体的供给和由下降的苛性碱溶液的保留引起的气体的排放被防止，并且可以使用大尺寸的电解池，而没有常规电解系统中通常遇到的问题。
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公开(公告)号：US5938901A
公开(公告)日：1999-08-17
申请号：US890667
申请日：1997-07-09
CPC分类号： H01M4/8626 , C25B11/035
摘要： A gas-diffusion electrode (cathode) in contact with an ion-exchange membrane partitioning an electrolytic cell for producing caustic soda, etc., by electrolysis into an anode chamber and a cathode chamber (gas chamber). The gas-diffusion electrode is divided into plural electrode members in the horizontal direction with an interval provided between adjacent electrode members. Electrolyte guide plates may be disposed on the electrode members or between the adjacent electrode members. An aqueous caustic soda solution formed in the electrolysis smoothly is removed from the gas-diffusion electrode without clogging the electrode.
摘要翻译： 与通过电解进入阳极室和阴极室（气室）而分离用于生产苛性钠的电解池的离子交换膜接触的气体扩散电极（阴极）。 气体扩散电极在水平方向上被分成多个电极部件，间隔设置在相邻的电极部件之间。 电解质引导板可以设置在电极构件上或相邻的电极构件之间。 在电解中形成的电解中的苛性钠水溶液从气体扩散电极中除去而不堵塞电极。
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公开(公告)号：US5536379A
公开(公告)日：1996-07-16
申请号：US416366
申请日：1995-04-04
CPC分类号： C25B11/035 , H01M4/86
摘要： A gas diffusion electrode comprising a water permeable gas diffusion and reaction layer and a porous and electrically conductive electrode current collector having a water repellency bonded to the gas diffusion and reaction layer.
摘要翻译： 一种气体扩散电极，其特征在于，具有透水性气体扩散反应层和具有与气体扩散反应层接合的斥水性的多孔导电性电极集电体。
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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：US5900127A
公开(公告)日：1999-05-04
申请号：US825866
申请日：1997-04-02
申请人： Masamori Iida , Yoshinori Nishiki , Takayuki Shimamune , Setsuro Ogata , Masashi Tanaka , Shuhei Wakita , Shun Takahashi
发明人： Masamori Iida , Yoshinori Nishiki , Takayuki Shimamune , Setsuro Ogata , Masashi Tanaka , Shuhei Wakita , Shun Takahashi
CPC分类号： C25B11/0478 , C02F1/46109 , C02F1/4618 , C02F1/722 , C02F1/78 , C02F2001/46138 , C02F2001/46161 , C02F2201/4611 , C02F2201/46115 , C02F2201/46195
摘要： An electrode for electrolysis comprising an electrode base material and an electrode substance having an electrically conductive diamond structure covering the surface of the electrode base material. The electrode substance having an electrically conductive diamond structure may be a diamond containing an impurity selected from boron, phosphorus and graphite. Alternatively, the electrode substance having an electrically conductive diamond structure may comprise a composite of a diamond and an electrically conductive material. In a preferred embodiment, the electrode further comprises an interlayer comprising at least one of the carbide of a valve metal and silicon carbide disposed between the electrode base material and the electrode substance having an electrically conductive diamond structure. Also disclosed is an electrolytic cell having two chambers including an anode chamber and a cathode chamber partitioned by an ion-exchange membrane. At least one of the anode placed in the anode chamber and a cathode placed in the cathode chamber is an electrode comprising an electrode base material and an electrode substance having an electrically conductive diamond structure covering the surface of the electrode base material. An electrolytic cell having three chambers is also disclosed, including an anode chamber, an intermediate chamber and a cathode chamber partitioned by ion-exchange membranes. At least one of an anode placed in the anode chamber and a cathode placed in the cathode chamber is an electrode comprising an electrode base material and an electrode substance having an electrically conductive diamond structure covering the surface of the electrode base material.
摘要翻译： 一种电解用电极，其特征在于，具有电极基材和覆盖所述电极基材表面的导电性金刚石结构的电极物质。 具有导电金刚石结构的电极物质可以是含有选自硼，磷和石墨的杂质的金刚石。 或者，具有导电金刚石结构的电极物质可以包括金刚石和导电材料的复合物。 在优选实施例中，电极还包括中间层，其包括设置在电极基材和具有导电金刚石结构的电极物质之间的阀金属和碳化硅的碳化物中的至少一种。 还公开了一种具有两个腔室的电解池，该腔室包括由离子交换膜隔开的阳极室和阴极室。 放置在阳极室中的阳极中的至少一个和放置在阴极室中的阴极是包括电极基材和覆盖电极基材表面的导电金刚石结构的电极物质的电极。 还公开了一种具有三个室的电解池，包括由离子交换膜分隔的阳极室，中间室和阴极室。 放置在阳极室中的阳极中的至少一个和放置在阴极室中的阴极是包括电极基材的电极和具有覆盖电极母材表面的导电金刚石结构的电极物质。
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8.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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9.发明授权Process and apparatus for the production of an aqueous solution of hydrogen peroxide 失效用于生产过氧化氢水溶液的方法和设备
公开(公告)号：US6045684A
公开(公告)日：2000-04-04
申请号：US60814
申请日：1998-04-16
CPC分类号： B01D61/44
摘要： An on-site process and apparatus for producing hydrogen peroxide at a high efficiency substantially from brine and oxygen-containing gas alone as raw materials while removing alkaline earth metals. Sea water concentrated by an electrodialytic apparatus 2 or the like as a raw material is supplied to an impurity removing apparatus 10 where caustic soda produced in an acid-alkali producing apparatus 11 at a subsequent stage and/or carbon dioxide gas is added to remove alkaline earth metals contained in sea water in the form of a hydroxide or carbonate precipitate. Separately, the acid-alkali producing apparatus 11 performs a salt separating operation to produce caustic soda which is then supplied to a hydrogen peroxide generator 28 to produce an alkaline aqueous solution of hydrogen peroxide.
摘要翻译： 一种现有的过程和装置，其以高效率生产基本上从盐水和含氧气体为原料的过氧化氢，同时除去碱土金属。 通过电渗析装置2等作为原料浓缩的海水被供给到杂质除去装置10中，在除去装置10中，在后续阶段的酸碱生产装置11中产生苛性钠和/或二氧化碳气体以除去碱 包含在海水中的以氢氧化物或碳酸盐沉淀形式的地球金属。 单独地，酸碱生产装置11进行盐分离操作以产生苛性钠，然后将其供应到过氧化氢发生器28以产生碱性过氧化氢水溶液。
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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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