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公开(公告)号：JPH0986915A
公开(公告)日：1997-03-31
申请号：JP24585795
申请日：1995-09-25
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MURATA KAZUHISA , USHIJIMA YOJI
Abstract: PROBLEM TO BE SOLVED: To efficiently produce ferromagnetic iron fine particle (iron-carbon complex ferromagnetic fine particle) whose surface is coated with a carbonaceous material by a simple operation. SOLUTION: A mixture of an organic substance, preferably an organic low- molecular weight compound and an iron carbonyl compound is thermally decomposed preferably under reduced pressure or in the presence of an inert gas at 500-2,000 deg.C to produce iron-carbon complex ferromagnetic fine particle.
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公开(公告)号：JPH07249508A
公开(公告)日：1995-09-26
申请号：JP6802094
申请日：1994-03-11
Applicant: AGENCY IND SCIENCE TECHN
Inventor： USHIJIMA YOJI , MURATA KAZUHISA
Abstract: PURPOSE:To obtain stable ferromagnetic carbonaceous material which is high in magnetic saturation by directly thermally decomposing an organic compound containing iron within a specific temperature range in a vacuum. CONSTITUTION:A ferromagnetic carbonaceous material manufacturing method in which an organic compound containing iron is thermally decomposed within a specific temperature range of 500-1,500 deg.C in a vacuum. The organic compound containing iron is composed of an organometallic compound which is, in turn, composed of ferrocene or a ferrocene derivative. The ferrocene derivative has a substituent selected from a aliphatic or aromatic group. In addition, the substituent of the ferrocene derivative contains a hetero-element and the organic compound containing iron is a coordination compound. Therefore, fine metallic particles coated with the carbonaceous material can be efficiently and easily manufactured and the particles can be used not only as fine ferromagnetic metallic particles having an excellent oxidation resistance, but also as the raw material of a magnetic fluid or electroviscous fluid.
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公开(公告)号：JPH06251924A
公开(公告)日：1994-09-09
申请号：JP6284193
申请日：1993-02-26
Applicant: AGENCY IND SCIENCE TECHN
Inventor： USHIJIMA YOJI , MURATA KAZUHISA
Abstract: PURPOSE:To provide a superior organomagnetic material, which is easily manufacture, is superior in stability and has a high saturated magnetization value of the same degree as that of metallic nickel, and a method of manufacturing the magnetic material. CONSTITUTION:An organomagnetic material consists of an amorphous carbide, which contains phosphorus, which is on the way to a graphitization, and/or boron and contains hydrogen. A method of manufacturing the organomagnetic material is characterized by obtaining the amorphous carbide, which contains the phosphorus, which is on the way to a graphitization, and/or the boron and contains the hydrogen, by heating an organic phosphorus compound having the compositional ratio of hydrogen to carbon = 1 to 1.7 or more and/or an organic boron compound at a temperature of 500 deg.C or higher under inert gas or a vacuum.
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Patent Agency Ranking
公开(公告)号：JPH05198421A
公开(公告)日：1993-08-06
申请号：JP2891592
申请日：1992-01-20
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MURATA KAZUHISA , USHIJIMA YOJI , MATSUDA AKIO , MASUDA TAKASHI
Abstract: PURPOSE:To obtain a stable organic magnetic material having high saturation magnetization by a method wherein the hydrogen-containing carbide of organic monomer compound is subjected to a plasma treatment. CONSTITUTION:Organic compound is heated in an inert gas atmosphere or in a vacuum to obtain amorphous carbide containing 1-50 hydrogen atoms for 100 carbon atoms. Then the amorphous carbide is subjected to a plasma treatment. Aliphatic hydrogen carbide or alicyclic hydrogen carbide expressed by a formula I or a formula II can be used as the organic compound. The examples of the compounds expressed by the formula I are pentane, octane, dodecane, dodecanol, etc., and the examples of the compounds expressed by the formula II are cyclohexane, methyl cyclohexane, cyclohexanol, chlorocyclohexane, etc. With this constitution, a stable organic magnetic material having high saturation magnetization can be easily manufactured.
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公开(公告)号：JPH09241627A
公开(公告)日：1997-09-16
申请号：JP5562496
申请日：1996-03-13
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MIZUKAMI FUJIO , USHIJIMA YOJI , KAMATA SHUNEI , MURATA SHIGEO , FUKAYA TOSHIO , MATSUDA HIROO , OZASA TAKEHITO , KAWASAKI TOSHIO , FUJII ARIOKI , USUI YOSHIHARU
IPC: C09K11/06
Abstract: PROBLEM TO BE SOLVED: To simply obtain an organic solid illuminant which comprises a solid aromatic compound bearing an imino group, manifests luminous phenomenon even in the solid state and is stable and excellent in fluorescence properties. SOLUTION: This solid illuminant comprises a solid aromatic compound bearing an imino group of the formula: -C=NR (R is H, a functional group or organic group, preferably an aliphatic, aromatic, carbocyclic aromatic, heterocyclic aromatic, hydroxyl), typically N-benzylidene)methylamine, N-(naphthylidene)aniline, N-phenyl-troporone-1-imine, N-(α-methylbenzylidene) methylamine, N-phenyl-troporon-1-imine or the like. There compounds are obtained by condensation reaction between an aromatic aldehyde or an aromatic ketone and an amine.
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公开(公告)号：JPH09237641A
公开(公告)日：1997-09-09
申请号：JP4274796
申请日：1996-02-29
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAYAMA KAZUHIRO , ARAKAWA HIRONORI , SUGIHARA HIDEKI , HANAOKA TAKAMASA , USHIJIMA YOJI , TAKAHASHI TOSHIKAZU , KAWANISHI YUJI
Abstract: PROBLEM TO BE SOLVED: To obtain a release voltage so as to form a solar cell by composing an electrode of niobium oxide. SOLUTION: A porous semiconductor electrode is composed of niobium oxide having a large surface area. The niobium oxide desirably has a small primary particle diameter in order to provide a large surface area for the electrode. The niobium oxide electrode is immersed in a solution of a pigment, thereby adsorbing the pigment. It is preferable that substance, which can transport an electric charge by a redox pair of stable ions at a sufficient speed, be used as an electrolyte. The electrolyte containing a redox agent is interposed between the niobium oxide electrode adsorbing the pigment and a counter electrode, and then, the entirety is sealed via a sealant.
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公开(公告)号：JPH08165101A
公开(公告)日：1996-06-25
申请号：JP31029394
申请日：1994-12-14
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MURATA KAZUHISA , USHIJIMA YOJI , FUJITA KENICHI
IPC: C01B3/26
Abstract: PURPOSE: To provide a method for producing hydrogen without producing a by-product of carbon dioxide, having a low catalyst deteriorating speed and free from a trouble of the suppression of reaction attributable to the coexistence of carbon dioxide, etc., by thermally cracking a hydrocarbon in the presence of a fine carbonaceous substance having an outer surface area of larger than a specified value. CONSTITUTION: This is a method for producing hydrogen efficiently from a hydrocarbon such as methane without using a heavy metal catalyst. As far as a carbonaceous substance as the catalyst is fine powder having an outer surface area of >=1m /g, other conditions such as production method and raw materials are not specified. For instance, the carbonaceous catalyst is preferably soot, charcoal, ultra fine particle such as activated carbon, carbon nanotube, aggregate carbon or soot-like carbon obtained during arc discharge between carbon electric poles. The hydrocarbon for this process is preferably a hydrocarbon of a gaseous or liquid state at normal temperature having a large hydrogen/carbon ratio. In order to carry out the thermal cracking of the hydrocarbon efficiently, it is diluted with an inert gas such as argon, nitrogen or helium. Preferably, the concentration of the hydrocarbon in a reaction gas is 0.8-5vol.%, the reaction temperature is 400-1200 deg.C, and the contact time of the hydrocarbon gas with the catalyst surface is 0.1-50sec.
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公开(公告)号：JPH07155600A
公开(公告)日：1995-06-20
申请号：JP34017493
申请日：1993-12-07
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MURATA KAZUHISA , USHIJIMA YOJI
Abstract: PURPOSE:To obtain a reaction medium accelerating an aromatization reaction and to efficiently produce an arom. compd. from a nonarom. compd. in a single- step reaction process using the reaction medium. CONSTITUTION:This medium for an aromatization reaction is made of a carbonaceous material contg. a diamondlike structure in at least a part of its structure. In the presence of this medium, a nonarom. compd. is brought into the aromatization reaction at a high temp.
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