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1. 发明专利

JPH08296079A ACTIVE CATHODE AND ITS PRODUCTION 失效
公开(公告)号：JPH08296079A
公开(公告)日：1996-11-12
申请号：JP12591195
申请日：1995-04-26
申请人： CHLORINE ENG CORP LTD
发明人： KISHI TAKEMICHI , ARIMOTO OSAMU
IPC分类号： C23C2/04 , C23C18/31 , C23C28/02 , C25B11/04 , C25B11/06 , C25B11/08
摘要： PURPOSE: To produce an active cathode capable of stably keeping a sufficiently low hydrogen overvoltage, hardly causing contamination of an ion exchange membrane when it is used in an electrolytic cell and preventing degradation or ignition due to oxidation. CONSTITUTION: In the active cathode, a first layer consisting essentially of nickel or cobalt is formed on a metallic base body and a second layer consisting essentially of platinum or ruthenium is formed on the first layer. It is preferable that the first layer is formed by incorporating a Raney nickel, and the second layer has a vast cathodic actuating area. Further it is preferable that the first layer is made of nickel oxide or cobalt oxide, and the second layer has the vast cathodic actuating area consisting of fine platinum particles or ruthenium particles.

2. 发明专利

JPH0835089A ANODE FOR PRODUCING HYPOCHLORITE AND ITS PRODUCTION 失效
公开(公告)号：JPH0835089A
公开(公告)日：1996-02-06
申请号：JP17068494
申请日：1994-07-22
申请人： CHLORINE ENG CORP LTD
发明人： ARIMOTO OSAMU , KISHI TAKEMICHI
IPC分类号： C25B11/10 , C25B1/26
摘要： PURPOSE:To form a high concn. hypochlorite ion at a high current efficiency by incorporating the oxide of cobalt, lanthanum or the like in a coating film composed of the oxide of palladium, ruthenium or titanium and platinum in an electrode having an electrode activated coating film on a conductive base body. CONSTITUTION:The anode for producing hypochlorite has the coating film containing at least one or more kind of the metal oxide of cobalt, lanthanum, cerium and yttrium with palladium oxide of 10-45, ruthenium oxide of 15-45, titanium dioxide of 10-40, platinum of 10-20 by wt.%. The anode is produced by preparing a slurry like coating solution obtained by dispersing palladium oxide and the oxides of at least one or more kind of cobalt, lanthanum, cerium and yttrium in a solution containing each compound of ruthenium, titanium and platinum, applying the coating solution on the electrode base body and firing in an oxygen containing atmosphere.

3. 发明专利

JP2000117060A TREATMENT OF ION EXCHANGE RESIN OF ELECTROLYTIC CELL 失效
公开(公告)号：JP2000117060A
公开(公告)日：2000-04-25
申请号：JP30476898
申请日：1998-10-12
申请人： CHLORINE ENG CORP LTD
发明人： MARUMOTO MASATAKA , ARIMOTO OSAMU , KISHI TAKEMICHI
IPC分类号： B01D61/52 , C02F1/469 , C25B9/00 , C25B9/08 , C25B13/08
摘要： PROBLEM TO BE SOLVED: To enable the production of caustic soda, etc., by efficiently subjecting salt water to electrolytic treatment even in the case that a new ion exchange membrane electrolytic cell reaction is started by previously treating the ion exchange membrane with a dilute caustic soda soln. specified in concn. before starting the electrolytic cell reaction after fixing the ion exchange membrane to the ion exchange membrane electrolytic cell. SOLUTION: The electrolytic cell 10 is divided into an anode chamber 2 and a cathode chamber 3 with the ion exchange membrane 1. An anode 4, a cathode 5 and the heater 6 for controlling an electrolytic temp. are arranged at these chambers. When the electrolytic cell 10 is energized and salt water is circulated to the anode chamber 2 and pure water is circulated to the cathode chamber 3, gaseous hydrogen and chlorine are recovered from the anode chamber 2 and the cathode chamber 3, and also the caustic soda is recovered as cathode chamber liq.. In such a case, when the electrolytic cell 10 is constructed by using the ion exchange membrane 1 subjected to dip treatment with dilute caustic soda soln., electrolytic voltage is kept low even at the start of the electrolytic cell 10 equipped with the new ion exchange membrane 1. Then the concn. of the caustic soda soln. is set to 1.0-3.0 wt.%.

4. 发明专利

JPH08283977A ACTIVE CATHODE AND ITS PRODUCTION 失效
公开(公告)号：JPH08283977A
公开(公告)日：1996-10-29
申请号：JP8919995
申请日：1995-04-14
申请人： CHLORINE ENG CORP LTD
发明人： KISHI TAKEMICHI , ARIMOTO OSAMU
IPC分类号： C25B11/04
摘要： PURPOSE: To obtain an active cathode large in activity and corrosion resistance. CONSTITUTION: The active cathode prevented from the deterioration due to backward current at the time of stopping energizing or the deterioration due to air at the time of taking out from a electrolytic cell is produced by forming an electrode catalyst layer containing Ni, large in specific surface area and low in hydrogen over-voltage and after that, treating with a solution containing silver to coat the electrode catalyst with silver and at the time of operating, the silver-containing solution is added into a cathode chamber in the electrolytic cell to prevent the deterioration of the active electrode. As a result, the active cathode slight in the lowering of activity and low in hydrogen over-voltage is obtained.

5. 发明专利

JP2005126760A Ion exchange membrane electrolysis method 有权
标题翻译：离子交换膜电解法
公开(公告)号：JP2005126760A
公开(公告)日：2005-05-19
申请号：JP2003362982
申请日：2003-10-23
申请人： Chlorine Eng Corp Ltd , クロリンエンジニアズ株式会社
发明人： HASHIMOTO TERUMI , ARIMOTO OSAMU , KISHI TAKEMICHI
IPC分类号： C02F1/46 , C25B9/00 , C25B15/00
摘要： PROBLEM TO BE SOLVED: To prevent the damage at the start of operating an ion exchange membrane fitted to an electrolytic cell in an ion exchange membrane electrolysis method.
SOLUTION: In the ion exchange membrane electrolysis method, an ion exchange membrane is fitted to an ion exchange membrane electrolytic cell, thereafter, an alkali metal chloride aqueous solution having a concentration and a temperature in the range exhibiting an elongation percentage of -1.5 to 0% compared with the elongation in pure water at 25°C of the ion exchange membrane is filled into an anode chamber, and, after the completion of the change in the ion exchange membrane, the electrolytic liquid is exchanged with that having a concentration and a temperature at the time of regular operation.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了防止在离子交换膜电解方法中操作安装在电解槽上的离子交换膜开始时的损伤。解决方案：在离子交换膜电解方法中，将离子交换膜装配到离子交换膜电解槽中，然后将浓度和温度在伸长率的范围内的碱金属氯化物水溶液与离子交换膜的25℃下的纯水中的伸长率相比为1.5〜0％，填充到阳极室中，在离子交换膜的变化完成后，将电解液与具有浓度和正常运行时的温度。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JPH07252683A REDUCTION INHIBITIVE CATHODE AND ITS MANUFACTURE 失效
公开(公告)号：JPH07252683A
公开(公告)日：1995-10-03
申请号：JP4072594
申请日：1994-03-11
申请人： CHLORINE ENG CORP LTD
发明人： ARIMOTO OSAMU , KATAYAMA SHINJI
IPC分类号： C25B9/10 , C25B1/26 , C25B1/28 , C25B11/20
摘要： PURPOSE:To prevent the reduction in yield through the cathodic reduction of a product from occurring by providing a layer contg. an ion exchanger on the surface of the cathode at the time of electrolyzing an inorganic salt aq. solution to produce a hypochlorite, chlorate, perchlorate or persulfate. CONSTITUTION:The reduction in production efficiency of a product through the reduction in current efficiency for electrolysis is caused by the cathodic reduction of e.g. the formed hypochlorite or chlorate ions to chloride ions at the time of electrolyzing an aq. solution of an inorganic salt such as sodium chloride, etc., to produce an oxidizing material such as hypochlorite, chlorate, perchlorate, persulfate, etc., or, by the cathodic reduction of persulfate ions to sulfate ions at the time of forming persulfate with electrolysis using a non- diaphragm process. In order to prevent this reduction in production efficiency, the cathode surface provided with porousness is coated with a cation exchanger when the ions to be reduced on the surface of the cathode are anions or, with an anion exchanger when the ions to be reduced on the surface of the cathode are cations, to prevent the reduction of the oxidizing material from occurring and to electrolytically produce the oxidizing material with high current efficiency and in a good yield.

7. 发明专利

JPH05306484A 失效
公开(公告)号：JPH05306484A
公开(公告)日：1993-11-19
申请号：JP11167392
申请日：1992-04-30
申请人： CHLORINE ENG CORP LTD
发明人： ARIMOTO OSAMU , KATAYAMA SHINJI , TAKE YOSHINARI
IPC分类号： C25B9/00 , C25B9/04 , C25B9/10 , C25B9/18 , C25B9/20 , C25B11/02 , C25B11/03 , C25B15/04
摘要： PURPOSE:To specify the distance between an electrode and a counter electrode or an ion-exchange membrane. CONSTITUTION:An electrode 4 is joined to the protrusion 2 of a partition wall or rib by an interdigital spring member 3 with the teeth bent, hence the electrode surface is kept flat by the teeth, and the distance between the electrode and the partition wall or rib as the electrode support is specified. As a result, the electrode surface is kept flat, and an ion-exchange membrane is not damaged.

8. 发明专利

JP2005105352A Method for manufacturing cathode 有权
标题翻译：制造阴茎的方法
公开(公告)号：JP2005105352A
公开(公告)日：2005-04-21
申请号：JP2003340341
申请日：2003-09-30
申请人： Chlorine Eng Corp Ltd , クロリンエンジニアズ株式会社
发明人： ARIMOTO OSAMU , KATAYAMA TOMOJI
IPC分类号： C25D21/10 , C25B1/04 , C25B11/00 , C25D15/02 , C25D17/06
CPC分类号： Y02E60/366
摘要： PROBLEM TO BE SOLVED: To provide a cathode with a low hydrogen overvoltage, which does not give damage such as a scratch and a pinhole to an ion exchange membrane, when installed in an electrolytic cell using the ion exchange membrane.
SOLUTION: The method for manufacturing the cathode comprises arranging the cathode substrate in a plating bath having fine particles dispersed therein so that the surface to be coated with a cathode catalyst can be vertical to a bath surface; and carrying out dispersal plating while passing a plating solution from the surface to be coated with the cathode catalyst of the cathode substrate to the back face.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：当使用离子交换膜安装在电解槽中时，提供一种不会对离子交换膜造成诸如划痕和针孔等损坏的低氢过电压的阴极。解决方案：阴极的制造方法包括：将阴极基板配置在分散有细颗粒的电镀液中，使得被阴极催化剂涂布的表面垂直于镀液表面; 并在从阴极基板的阴极催化剂涂布的表面向背面通过镀敷液的同时进行扩散电镀。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2003138392A ION EXCHANGE MEMBRANE ELECTROLYTIC CELL 审中-公开
公开(公告)号：JP2003138392A
公开(公告)日：2003-05-14
申请号：JP2001332848
申请日：2001-10-30
申请人： CHLORINE ENG CORP LTD
发明人： ASAUMI KIYOTO , ARIMOTO OSAMU , KATAYAMA SHINJI
IPC分类号： C25B9/02 , C25B9/00
摘要： PROBLEM TO BE SOLVED: To provide an ion exchange membrane electrolytic cell in which an ion exchange membrane and a cathode are brought into tight contact with each other and with which stable operation is possible. SOLUTION: The ion exchange membrane electrolytic cell which is an electrolytic cell arranged with a cathode in tight contact with the ion exchange membrane, in which a carbon fiber elastic body is arranged between the cathode and a cathode current collector and the cathode is brought into tight contact with the ion exchange membrane by the carbon fiber elastic body.

10. 发明专利

JPH09324289A ACTIVE CATHODE ITS PRODUCTION AND ITS REGENERATING METHOD 失效
公开(公告)号：JPH09324289A
公开(公告)日：1997-12-16
申请号：JP16845096
申请日：1996-06-07
申请人： CHLORINE ENG CORP LTD
发明人： KISHI TAKEMICHI , ARIMOTO OSAMU
IPC分类号： C25B11/04
摘要： PROBLEM TO BE SOLVED: To provide an active cathode which is low in a manufacturing cost, is capable of maintaining a low hydrogen overvoltage, is simply and easily regeneratable in case of deterioration and degradation in its activity, maintains the initial high activity and is stably usable over long period of time even after the regeneration and is highly industrially practicable. SOLUTION: This active cathode is formed of a metallic base body, a first layer mainly composed of nickel of a high surface area on this material and a second layer mainly composed of rhodium of a high surface area of the cathode operation on this first layer. The metallic base body of this active cathode is preferably a nickel metal or nickel alloy. The cathode base body formed with the first layer mainly composed of the metallic nickel of the high surface area on the metallic base body is subjected to an immersion treatment in a rhodium salt-contg. soln. or is immersed into this rhodium salt-contg. soln. and is subjected to an electrolytic treatment with the cathode base body as cathode in the rhodium salt-contg. soln., by which the second layer mainly composed of the rhodium is formed on the first layer mainly composed of the nickel and the active cathode is thus produced.

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