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公开(公告)号：JPH09227105A
公开(公告)日：1997-09-02
申请号：JP6709196
申请日：1996-02-27
Applicant: KAO CORP , SADAKATA MASAKI
Inventor： TORIMOTO YOSHIAKI , SADAKATA MASAKI
Abstract: PROBLEM TO BE SOLVED: To provide both a method for oxidizing carbon or a hydrocarbon compound by which negatively charged oxygen atoms can simply be produced only by applying a low voltage thereto to oxidize the carbon or hydrocarbon compound at a relatively low temperature without requiring complicated expensive equipment such as discharge equipment, high vacuum equipment and an electronic ion gun or a special gas and an apparatus therefor. SOLUTION: This method for oxidizing carbon or a hydrocarbon compound comprises applying a voltage across a noble metal as a negative electrode (a) and an electrode (b) installed with a gap left therefrom as a positive electrode, thereby generating oxygen species on the electrode (a) as negatively charged oxygen atoms in the direction from the electrodes (a) to (b), reacting the negatively charged oxygen atoms with the carbon or hydrocarbon compound present between the electrodes (a) and (b) or on or in the electrode (b) and oxidizing the carbon or hydrocarbon compound. The apparatus is used for the method and an ashing method utilizes the method.
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Patent Agency Ranking
公开(公告)号：JPH0657469A
公开(公告)日：1994-03-01
申请号：JP23139992
申请日：1992-08-05
Applicant: KAO CORP , SADAKATA MASAKI
Inventor： TADOKORO TAKAAKI , SHIBUICHI TAKASHI , SAKAMOTO AKIRA , TORIMOTO YOSHIAKI , DEN KEIICHI , SADAKATA MASAKI
Abstract: PURPOSE:To easily oxidize a substrate by impressing a voltage on both electrodes while supplying oxygen and the substrate on both sides of a specified solid electrolyte with both sides coated with an electrode to ionize the oxygen. CONSTITUTION:Both sides of an oxygen ion-permeable solid electrolyte 1 of ZrO2, etc., contg. 8mol% of a solid soln. of Y2O3 in a reactor 7 are coated with pasty Au to form an anode 4 and a cathode 4, and the inside of the reactor 7 is divided into an oxygen supply chamber 2 and an oxidation reaction chamber 3. Oxygen is supplied to the chamber 2, and hydrocarbons, saturated or unsaturated liq. carboxylic acids or a solid reaction substrate are supplied to the chamber 3. A voltage is impressed on both electrodes 4 from a power source 5 at the rate of (25-0.04T)V/mm (where T is the temp. in deg.C) per mm thickness of the solid electrolyte to increase the amt. of oxygen to be passed through the electrolyte 1, the oxygen is converted to an active oxygen species, and the reaction substrate in the oxidation reaction chamber 3 is easily oxidized in the absence of catalyst.
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公开(公告)号：JPH06248481A
公开(公告)日：1994-09-06
申请号：JP5959893
申请日：1993-02-23
Applicant: KAO CORP , SADAKATA MASAKI
Inventor： TORIMOTO YOSHIAKI , DEN KEIICHI , SADAKATA MASAKI
Abstract: PURPOSE:To oxidize gaseous phase, liquid phase and solid phase materials at a reaction temp. at which control is easy by isolating a site where active oxygen species are formed and a reaction site. CONSTITUTION:Both surfaces of a solid-state electrolyte having specific properties are coated with electrode materials and while a voltage is impressed between the electrodes or the electrodes are shorted from each other, oxygen is supplied to one side of the solid-state electrolyte and the active oxygen species are formed on the other side. Simultaneously, a carrier gas is supplied to the other side to move the formed active oxygen species to the reaction site where a reaction substrate exists. The reaction substrate is oxidized by the active oxygen species at this reaction site. As a result, the materials exhibiting the gaseous phase, the liquid phase and the solid phase are oxidized by the method which facilitates the control of the reaction temp. and lessens the decomposition of reaction materials and the formation of side-products.
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公开(公告)号：JPH0657470A
公开(公告)日：1994-03-01
申请号：JP23139892
申请日：1992-08-05
Applicant: KAO CORP
Inventor： TADOKORO TAKAAKI , SHIBUICHI TAKASHI , SAKAMOTO AKIRA , TORIMOTO YOSHIAKI , DEN KEIICHI , SADAKATA MASAKI
IPC: B01J12/00 , C01B13/14 , C01B32/50 , C07B33/00 , C25B1/00 , C25B3/02 , C25B9/00 , C25B9/08 , C01B31/20
Abstract: PURPOSE:To ionize oxygen, to pass the ionized oxygen through a solid electrolyte, to convert the ionized oxygen to an active oxygen species and to easily oxidize the reaction substrate. CONSTITUTION:A reactor 4 is divided into an oxygen supply chamber 2 and an oxidation reaction chamber 3 by a solid electrolyte 1 consisting of a fluorite- structure metal oxide such as ZrO2 contg. a solid soln. of Y2O3. Gaseous oxygen is supplied to the chamber 2, and a reaction substrate by a compd. consisting of a gas, a liq. or a fine-powder solid is supplied to the chamber 3. The reactor 4 is heated to 50-700 deg.C to convert the oxygen in the chamber 2 to oxygen ion, the ion is passed through the solid electrolyte 1 and converted to an active oxygen species which is supplied to the chamber 3, hence the reaction substrate in the chamber 3 easily reacts with the species in the absence of catalyst and electrode, and the gaseous, liq. or solid reaction substrate consisting of various compds. is oxidized with this simple device.
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公开(公告)号：JPH09183602A
公开(公告)日：1997-07-15
申请号：JP35449295
申请日：1995-12-28
Applicant: KAO CORP , SADAKATA MASAKI
Inventor： TORIMOTO YOSHIAKI , SADAKATA MASAKI
Abstract: PROBLEM TO BE SOLVED: To simply and inexpensively generate a negatively charged oxygen atom by using a novel metal electrode as a negative electrode, impressing voltage between it and a positive electrode to generate oxygen species as the negatively charged oxygen in the direction from the negative electrode to the positive electrode. SOLUTION: The novel metal such as silver, platinum, ruthenium, palladium, rhodium is used as the negative electrode (a). The positive electrode (b) is provided at a certain distant from the negative electrode (a) and the oxygen species as the negatively charged oxygen atoms is generated in the direction from the negative electrode (a) to the positive electrode (b) by impressing voltage between the electrodes. In such a case, the negative electrode (a) and the supporting body are formed into a porous structure and by supplying oxygen through the porous structure on the negative electrode (a), all of the oxygen species present on the negative electrode (a) from the beginning is consumed and the negative charged oxygen atom is continuously generated without stopping the generation thereof. As the porous supporting body, a porous glass or the like is preferably used and as the porous electrode, an electrode formed by applying a novel metal paste on the supporting body and firing is preferably used.
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公开(公告)号：JPH0699029A
公开(公告)日：1994-04-12
申请号：JP27512392
申请日：1992-09-18
Applicant: KAO CORP , SADAKATA MASAKI
Inventor： TADOKORO TAKAAKI , SHIBUICHI TAKASHI , TORIMOTO YOSHIAKI , DEN KEIICHI , SADAKATA MASAKI
Abstract: PURPOSE:To improve the efficiency of NOx treatment in the presence of oxygen by a solid electrolyte by covering both the surfaces of a specified solid electrolyte with electrode materials, applying voltage between electrodes or shortcircuiting between electrodes and feeding oxygen and organic compound contg. gas to be treated to one side and to the other side of the solid electrolyte respectively. CONSTITUTION:Both the surfaces of a solid electrolyte 1 having the property of converting oxygen into oxide ions, the property of allowing oxide ions to permeate and the property of converting oxide ions into active oxygen species are covered with electrode materials and voltage is applied to between electrodes 4 by a power unit 5 or a short circuit is made between electrodes 4. And oxygen is fed to the surface of a cathode 4 on the oxygen feed chamber 2 side of the solid electrolyte 1 and simultaneously NOx and organic compounds contg. gas to be treated is fed to the surface of an anode 4 on the reaction chamber 3 side or to its vicinity. Consequently, the organic compounds are oxidized by active oxygen species generated on the gas to be treated feed side and NOx is reduced by reducing action of the formed oxide.
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