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21. 发明专利

JPH1161474A ELECTROLYSIS AND EQUIPMENT THEREFOR 失效
公开(公告)号：JPH1161474A
公开(公告)日：1999-03-05
申请号：JP22556997
申请日：1997-08-08
申请人： PERMELEC ELECTRODE LTD
发明人： YOSHIDA YASUKI , OGATA SETSUO , UNO MASAHARU , TANAKA MASASHI , NISHIKI YOSHINORI , SHIMAMUNE TAKAYUKI , INOUE HIROSHI , IWAKURA CHIAKI
IPC分类号： C25B11/03 , C25B3/04
摘要： PROBLEM TO BE SOLVED: To provide an electrolytic method by which even the corresponding hydrogen reaction rate can be contained in a hydrogen reaction chamber and the current efficiency of hydrogen reaction with respect to the electrolytic current for generating hydrogen can always be maintained at a high value, at the time of enhancing the electrolysis rate to enhance the hydrogen generation rate, and also to provide an equipment for this method. SOLUTION: This method comprises: dividing the equipment for this method into an electrolytic chamber 3 and a reaction chamber 4 with a hydrogen occlusion metal member 2; performing electrolysis of an electrolytic solution with one surface of the hydrogen occlusion metal member 2 as a cathode, by passing a current through the electrolytic solution between this cathode and an anode 5; occluding hydrogen generated by the electrolysis in the hydrogen occlusion metal member 2; and continuously subjecting the occluded hydrogen and an objective substance(s) to be treated to catalytic reaction on the other surface of the hydrogen occlusion metal member 2 to perform hydrogenation or reduction reaction of the objective substance(s) with the occluded hydrogen; wherein, as the equipment for the electrolytic method, an equipment provided with a porous catalyst layer 10 on the surface for catalytic reaction of the hydrogen occlusion metal member 2 is used, and this porous catalyst layer 10 is formed by reducing metal actions in an electroless plating solution with active hydrogen obtained through desorption of the occluded hydrogen in the occlusion metal, to plate the hydrogen occlusion metal member 2 with the metal derived from the metal actions.

22. 发明专利

JPH09125292A ELECTRODE SUBSTRATE 失效
公开(公告)号：JPH09125292A
公开(公告)日：1997-05-13
申请号：JP28540595
申请日：1995-11-01
申请人： PERMELEC ELECTRODE LTD
发明人： SHIMAMUNE TAKAYUKI , OGATA SETSUO , KAWAGUCHI YOSHIYUKI
IPC分类号： C25B11/10 , C23C4/10 , C25C7/02 , C25D1/04 , C25D17/10 , C25D17/12
摘要： PROBLEM TO BE SOLVED: To produce a high-performance electrode by forming a thermally sprayed layer of a titanium oxide grain coated with a platinum-group metal on the surface of a titanium substrate. SOLUTION: The titanium or titanium alloy used ordinarily in an insoluble anode, having a high purity of JIS first or second class and highly resistant to corrosion is preferably used as the electrode substrate. A thermally sprayed layer of a titanium oxide grain coated with a platinum-group metal or its alloy is formed on the substrate surface to produce an electrode substrate for an anode. Platinum is used as the platinum-group metal. Consequently, the electrode is prevented from disabling for using due to the corrosion between the substrate and an electrode catalyst bed while the catalyst bed still remains.

23. 发明专利

JPH09125290A ELECTROLYZING ELECTRODE 失效
公开(公告)号：JPH09125290A
公开(公告)日：1997-05-13
申请号：JP28540395
申请日：1995-11-01
申请人： PERMELEC ELECTRODE LTD
发明人： SHIMAMUNE TAKAYUKI , OGATA SETSUO , KAWAGUCHI YOSHIYUKI , NAKAJIMA YASUO
IPC分类号： C25B11/10 , C23C4/10 , C23C28/04 , C25C7/02 , C25D1/04 , C25D17/10 , C25D17/12
摘要： PROBLEM TO BE SOLVED: To obtain the electrode highly resistant to corrosion by forming a specified thermally sprayed layer, protective layer and electrode catalyst bed on a metallic substrate. SOLUTION: This electrode has a substrate consisting of a thin film forming metal, such as titanium or its alloy and generates oxygen as an anodic reaction. The substrate is coated with a conductive oxide contg. titanium element, a protective layer consisting of a metal oxide is formed on the conductive coating, and an electrode catalyst bed contg. iridium oxide is formed on the protective layer to constitute the electrode. The thickness of the thermally sprayed layer is preferably controlled to 10-25μm. The thermally sprayed layer consists of at least one kind selected from rutile-structure Ti oxide and titanium oxide doped with Ta or Nb. As a result, the electrode can be used over a long period as an oxygen generating anode in a strongly acidic electrolyte.

24. 发明专利

JPH05115879A TREATMENT OF DYESTUFF AQUEOUS SOLUTION 失效
公开(公告)号：JPH05115879A
公开(公告)日：1993-05-14
申请号：JP30967091
申请日：1991-10-29
申请人： PERMELEC ELECTRODE LTD
发明人： MATSUMOTO YUKIE , SEKIMOTO MASAO , OGATA SETSUO , HAMAGUCHI KATSUMI
IPC分类号： C02F1/461 , C02F1/58
摘要： PURPOSE:To solve a defect that time and cost are required in the decolorization treatment of a dyestuff aqueous solution by the conventional active carbon adsorption treatment or hypochlorous ion addition treatment by replacing the relevant processes with an electrolysis treatment. CONSTITUTION:This dyestuff aqueous solution containing chloride ion is treated by applying current with an insoluble electrode. Active chlorine or hypochlorous ion is generated by anodic oxidation of chloride ion and the active chlorine or the like acts on a chromophore of a dyestuff to decompose and to decolor. The method is economical as addition of a reagent is unnecessary and does not need a posttreatment as there is no residue of the reagent. And if conc. of residual active chlorine after treatment by applying current is large, the active chlorine is decomposed by reduction treatment such as application of current or the addition of a reagent.

25. 发明专利

JPS63130141A DECOMPOSITION CATALYST OF HYPOCHLORITE AND ITS PREPARATION 失效
公开(公告)号：JPS63130141A
公开(公告)日：1988-06-02
申请号：JP27643486
申请日：1986-11-21
申请人： PERMELEC ELECTRODE LTD
发明人： OGATA SETSUO , NAKAMATSU HIDEJI , SHIMAMUNE TAKAYUKI
IPC分类号： C01D3/14 , B01J23/40 , B01J23/46 , B01J23/89 , C02F1/58
摘要： PURPOSE:To eliminate the elution of a catalytic component to a liquid to be treated and to prevent the deterioration thereof due to use, by forming the decomposition catalyst of hypochlorite from metal oxide containing at least one kind of oxide of a platinum group metal as an active component. CONSTITUTION:A metal salt solution containing a thermally decomposable salt of at least one kind of a platinum group metal selected from ruthenium, palladium, iridium, rhodium and platinum is heated in an oxidative atmosphere to prepare a decomposition catalyst of hypochlorite containing metal oxide as an active component. This catalyst is pref. prepared by a method wherein the metal salt containing the aforementioned platinum group metal is applied to a corrosion resistant substrate such as titanium or a titanium alloy and heated at 300-600 deg.C in an oxidative atmosphere. The obtained catalyst is extremely stable and shows no elution of the catalytic components during use and can be also used in the decomposition of hypochlorite of drinking water.

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