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61. 发明专利

JPS579070A FORMATION OF ELECTROLYTE HOLDING MATRIX FOR FUEL CELL 失效
公开(公告)号：JPS579070A
公开(公告)日：1982-01-18
申请号：JP8143580
申请日：1980-06-18
申请人： HITACHI LTD
发明人： TAKEUCHI MASAHITO , MATSUDA SHINPEI , TAMURA KOUKI , ISHII KENZOU , KAHARA TOSHIKI , TAKEUCHI SEIJI , OKADA HIDEO , IMAHASHI JINICHI , OKABE SHIGERU , HIDA HIROSHI
IPC分类号： H01M8/02
摘要： PURPOSE:To obtain a uniformly thin matrix homogeneously impregnated with phosphoric acid by mixing a matrix body with a phosphoric-acid electrolyte, before the mixture is heated and directly applied to the surface of either a fuel electrode or an oxidizing-agent electrode. CONSTITUTION:Silicon carbide having a grain diameter of 0.1-10mum is added and mixed with 85-100wt% of orthophosphoric acid, before the mixture is heated at 150-200 deg.C and is adequately ground down, thus a homogeneous silicon-carbide phosphoric-acid paste being prepared. Thus prepared paste is applied to the surface of either a fuel electrode or an oxidizing-agent electrode by a brushing method or the like so as to make the paste to be interposed between these electrodes. By the means mentioned above, the internal resistance can be reduced since the electrode is tightly coated with the paste film having a uniformly small thickness. In addition, any gas generation due to a reaction between phosphoric acid and impurities can be prevented by giving sufficiently high bubble pressure to prevent reaction gases from reacting with the paste film, and by subjecting the electrode coated with the paste film to heat treatment process.

62. 发明专利

JP2000140620A REACTOR USING SUPERCRITICAL FLUID 失效
公开(公告)号：JP2000140620A
公开(公告)日：2000-05-23
申请号：JP31613698
申请日：1998-11-06
申请人： HITACHI LTD , HITACHI PLANT ENG & CONSTR CO
发明人： MUKAIDE MASAAKI , HONCHI AKIO , HIDA HIROSHI , KAWAGOE HIROSHI , MORIHARA ATSUSHI , KAWAJIRI HITOSHI , ASO SHINJI , MIYABAYASHI TETSUJI
IPC分类号： C02F11/06 , B01J3/00 , B01J3/02 , B01J19/00
摘要： PROBLEM TO BE SOLVED: To keep a stable reaction by keeping the ratio of flow-in quantity of a compressible fluid to a non-compressible fluid, which are reaction materials, and the pressure in a reaction part almost constant, in a reactor using supercritical fluid. SOLUTION: Relating to this reactor using the supercritical liquid for obtaining a reaction product by injecting the supercritical fluid 1 as a reaction medium, the compressible fluid 1 as a 1st reaction material and the non- compressible fluid 9 as a 2nd reaction material in the reaction part 3 and for discharging a reaction product from the reaction part 3, a controller 11 for controlling the ratio of the flow-in quantity of the 1st reaction material to the 2nd reaction material and the pressure of the reaction part 3 to be in a prescribed range by detecting the flow-in quantity of the compressible fluid 9 and the pressure of the reaction part 3 respectively by a flow-in quantity detecting means 8 and a pressure detecting means 7 and controlling at least one of the flow-in quantity of the reaction material 1, the flow-in quantity of the 2nd reaction material 9 and the discharge quantity of the reaction product is arranged.

63. 发明专利

JPH1192589A DISPOSAL SYSTEM OF PLASTIC MATERIAL 失效
公开(公告)号：JPH1192589A
公开(公告)日：1999-04-06
申请号：JP25300397
申请日：1997-09-18
申请人： HITACHI LTD
发明人： MUKAIDE MASAAKI , HONCHI AKIO , OKOCHI ISAO , HIDA HIROSHI , YAMASHITA HISAO , FUKUSHIMA TOSHIHIKO
IPC分类号： B09B3/00 , C08J11/10
摘要： PROBLEM TO BE SOLVED: To prevent a reaction vessel from corrosion by, prior to and/or after the decomposition treatment of a plastic material in a supercritical fluid as a solvent, subjecting the subject plastic material to a chemical reaction to control the mol.wt. and/or compsn. of decomposed compds., or to remove acids from the product in case the plastic material is halogen-contg. SOLUTION: A system to decompose a plastic material by liquefying, gasifying, oligomerizing or monomerizing the material wherein the subject material is subjected to one or more chemical reactions selected from the group consisting of hydrogenation, hydrogenation-decomposition, dehydrogenation, oxidation, dehalogenation and solvolysis prior to and/or after the treatment of the plastic material in a supercritical fluid. When necessary, a catalyst, pref. a heterogeneous catalyst is employed to accelerate the chemical reaction. The treatment in a supercritical fluid can enhance the decomposition ratio of a plastic material which is otherwise low.

64. 发明专利

JPH10355A PALLADIUM/CARBON CATALYST FOR HYDROGENATION AND ITS PRODUCTION 失效
公开(公告)号：JPH10355A
公开(公告)日：1998-01-06
申请号：JP15371696
申请日：1996-06-14
申请人： HITACHI LTD
发明人： HONCHI AKIO , MUKAIDE MASAAKI , HIDA HIROSHI , YAMASHITA HISAO
IPC分类号： B01J23/44 , B01J37/16 , C07B31/00 , C07B61/00 , C07C51/487 , C07C63/26
摘要： PROBLEM TO BE SOLVED: To improve a catalyst life by depositing palladium more on the surface layer part of a porous carbon carrier than in this carbon carrier and forming the palladium particles in the surface layer part of the carbon carrier to the diameter larger than the diameter of the palladium in the carrier at the time of depositing the palladium on the carbon carrier. SOLUTION: The catalyst for hydrogenation deposited with the palladium on the porous carbon carrier is formed by adding the carbon carrier into an aq. soln. of a palladium salt to adsorb part of the palladium salt on the carbon carrier, then adding a reducing agent to the soln., thereby reducing the palladium salt and depositing the palladium on the surface of the carbon carrier. At this time, the palladium is deposited more on the surface layer part of the carbon carrier than the inside of the carbon carrier and the palladium particles of the surface layer part of the carbon carrier is formed to the diameter larger than the diameter of the palladium particles within the carrier. In addition, the pH of the aq. soln. of the palladium salt is set at a range of 0.7 to 2.0 in order to control the particle size distribution of the palladium particles and the position on the carbon carrier on which the palladium particles are deposited.

65. 发明专利

JPH08290052A MEMBRANE PHOTOCATALYTIC CHEMICAL CONVERSION DEVICE 失效
公开(公告)号：JPH08290052A
公开(公告)日：1996-11-05
申请号：JP9929295
申请日：1995-04-25
申请人： HITACHI LTD , CHIKYU KANKYO SANGYO GIJUTSU
发明人： ICHIKAWA SHINICHI , DOI RYOTA , HIDA HIROSHI , MIYADERA HIROSHI
IPC分类号： C01B3/04 , B01J19/00 , B01J19/08 , B01J21/06 , B01J35/02
摘要： PURPOSE: To form hydrogen at room temp. from water, seawater or an electrolyte aq. soln. by utilizing a light source containing ultraviolet rays or solar rays and to further chemically convert CO2 at room temp. to use the same as resources. CONSTITUTION: In an apparatus having a TiO2 membrane photocatalyst 2, a proton separation membrane 8 and an electrochemical catalyst 9 successively arranged in a soln., a light source 1 irradiating the membrane photocatalyst with light and the circuit connecting the membrane photocatalyst 2 and the electrochemical catalyst 9 as main constitutional elements, the following process is performed at room temp. Electrons and holes are generated by irradiating the membrane photocatalyst 2 with light and the soln. brought into contact with the membrane photocatalyst 2 is reacted with the holes to generate protons and oxygen and the proton separation membrane 8 separates protons from oxygen to permit them to transmit and protons are electrochemically bonded to the surface of the electrochemical catalyst 9 to form hydrogen. When CO2 is supplied, the reduction reaction of CO2 is generated on the surface of the electrochemical catalyst 9 by protons and electrons to form CO and hydrocarbon.

66. 发明专利

JPH06262087A ELECTRICALLY HEATED CATALYST 失效
公开(公告)号：JPH06262087A
公开(公告)日：1994-09-20
申请号：JP5534893
申请日：1993-03-16
申请人： HITACHI LTD
发明人： OGAWA TOSHIO , WATANABE NORIKO , HIDA HIROSHI , KURODA OSAMU , KATO AKIRA , HONCHI AKIO
IPC分类号： B01J35/04 , B01J35/02 , F01N3/20
摘要： PURPOSE:To ensure that energized heating is stable by providing an electrode on both ends consisting of stacked corrugated strips and place strips of metal material or corrugated sheets strips, then winding the electrode around a core material, and constituting a core part for circulating an exhaust gas in an axial direction. CONSTITUTION:An electrode plate 3 is provided on both ends of the constituent member of a strip core part consisting of plane sheets arranged, and one electrode plate 3 is welded to a core material 2 and wound around the latter, with an insulating material 7 sandwiched between the electrode plate 3 and the core material 2 to constitute a core part for circulating an exhaust gas. An area between the electrodes is composed of stacked corrugated and plane sheets of metal, so that if the electrodes are energized, an electric current for heating the core part is scattered, resulting in a reduced electric resistance and a consequent drop in the voltage required for application of a specified power. Thus a shortcircuiting current between energizing members which constitute the core part is suppressed and the electric performance is stable. Further, the electrode 3 is composed of a flexible metal sheet, and also the corrugated sheets 5 welded to the electrode at an internal for securing a space which enables the exhaust gas to pass through.

67. 发明专利

JPH0559562A PRODUCTION OF TITANIUM OXIDE THIN FILM AND PRODUCTION OF PHOTOCHEMICAL REACTOR BY USING THIS THIN FILM 失效
公开(公告)号：JPH0559562A
公开(公告)日：1993-03-09
申请号：JP21999291
申请日：1991-08-30
申请人： HITACHI LTD , CHIKIYUU KANKYO SANGYO GIJUTSU
发明人： DOI RYOTA , MORI TOSHIKATSU , HIDA HIROSHI , MIYADERA HIROSHI
IPC分类号： B01J35/02 , C01G23/04 , C23C18/12 , H01M14/00
摘要： PURPOSE:To form the TiO2 thin film suitable for the anode of a photochemical reactor by applying a titanium sol contg. a Ti org. compd., acid, water, and alcohol at specific ratios on a substrate surface having a conductive surface and calcining the coating. CONSTITUTION:The titanium sol which is obtd. by mixing the Ti org. compd., such as titanium isopropoxide, the water, the acid, such as hydrochloric acid, and the alcohol, such as ethanol, and has 0.1 to 2mol/l Ti concn., 0.1 to 10 molar ratio of the water/Ti, and 2 to 40 equiv. ratio of the water/acid is applied on the conductive base material having the a thin film of SiO2 on the surface to form the TiO2 having 0.05 to 0.1mum thickness. This electrode is used as an anode and Cu or Pt dispersed with a group IIb element on the surface is used as a cathode, by which the photochemical reactor, such as carbon dioxide conversion cell having excellent conversion efficiency or water decomposing cell, is produced.

68. 发明专利

JPH0478413A METHOD AND DEVICE FOR SEPARATING GASEOUS MIXTURE 失效
公开(公告)号：JPH0478413A
公开(公告)日：1992-03-12
申请号：JP19110090
申请日：1990-07-19
申请人： HITACHI LTD
发明人： KURODA OSAMU , DOI RYOTA , OGAWA TOSHIO , HIDA HIROSHI , MORI TOSHIKATSU
IPC分类号： B01D53/22 , B01D61/38 , B01D69/00
摘要： PURPOSE:To separate gaseous carbon dioxide and to efficiently transport the carbon dioxide on an industrial scale by providing a heating means capable of making the temp. of the membrane surface layer of the liq. film on the raw gas chamber side lower than the temp. of the membrane surface on the permeated gas chamber side. CONSTITUTION:A gaseous mixture consisting of carbon dioxide, oxygen and the balance nitrogen and kept at room temp. is passed through a raw gas chamber 3, a permeated gas chamber 4 is filled with the gas of the same composition, a valve 7 is closed, a valve 8 is opened, and a tungsten lamp about 10cm from the surface of a light transmission window 2 is turned on. The valve 7 is opened immediately after the lamp is turned off to supply the raw gas to the chamber 4, the gas discharged through the valve 8 while the lamp is turned on is replaced by the raw gas, and the obtained gas is collected. The valve 7 is again closed, the lamp is again turned on, and the process is repeated. Consequently, about 5.7ml of the gas of the same composition contg. almost 52vol.% carbon dioxide is obtained.

69. 发明专利

JPH0459037A WATER-REPELLENT PHOTOCATALYST REACTOR 失效
公开(公告)号：JPH0459037A
公开(公告)日：1992-02-25
申请号：JP15975990
申请日：1990-06-20
申请人： HITACHI LTD
发明人： OGAWA TOSHIO , HIDA HIROSHI , DOI RYOTA , MORI TOSHIKATSU , KURODA OSAMU
IPC分类号： B01D53/86 , B01J19/00 , C01B32/50 , C07B31/00 , C07C1/02 , C07C9/04 , C07C29/15 , C07C31/04
摘要： PURPOSE:To promote the gaseous CO2 conversion reaction by irradiating the photoreduction catalyst suspended close to the water surface in a water vessel with sunlight and supplying gaseous carbon dioxide on the catalyst to cause a photoreduction reaction. CONSTITUTION:The photoreduction catalyst 1 in which a catalyst obtained by depositing a reducing active component on a conductive carrier is brought into contact with a photocatalyst obtained by depositing an oxidizing active component on a semiconductor through a water-repellent material is suspended close to the water surface in a water vessel 5. The catalyst is irradiated with sunlight 2, and gaseous carbon dioxide 3 is supplied on the catalyst 1 to cause a photoreduction reaction. Consequently, the gaseous carbon dioxide is easily supplied on the photoreduction catalyst close to the water surface, and the gaseous CO2 conversion reaction is promoted.

70. 发明专利

JPH044573A NA-S SECONDARY BATTERY 失效
公开(公告)号：JPH044573A
公开(公告)日：1992-01-09
申请号：JP10544490
申请日：1990-04-23
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： HIDA HIROSHI , NISHIMURA MAKOTO , MORI TOSHIKATSU , NISHIMURA SHIGEOKI , OSHIMA MASAAKI , KOBAYASHI AKIRA
IPC分类号： H01M10/39
摘要： PURPOSE:To have discharging and charging in good performance even in the initial period of battery operation by arranging powder or fibers, which have affinity with sodium, are electroconductive, and are dimensioned specifically, over the surface of solid electrolyte on the neg. electrode side. CONSTITUTION:Electroconductive micro-objects 3 having affinity with sodium 4 are arranged over the surface of solid electrolyte 1 on the neg. electrode 2 side, wherein the objects assume the form of either powder of particle sizes no more than 5mum or fibers of 5mum or less in the diameter. Material to the powder or fibers shall be a mixture of carbonaceous substance such as carbon black or graphite, metal such as stainless steel, one or more sorts of electroconductive ceramics such as beta''-alumina. The sodium carried by a wick of stainless steel is sent uniformly onto the surface of the solid electrolyte 1 by the capillary phenomenon of minute particles or fibers filling the surface of the solid electrolyte 1, so that the wettability is enhanced. This ensures discharging and charging in good performance even in the initial period of battery operation.

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