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    Hollow spheres of activated carbon and method for manufacture thereof
    1.
    发明授权
    Hollow spheres of activated carbon and method for manufacture thereof 失效
    活性炭空心球及其制造方法

    公开(公告)号：US3891574A

    公开(公告)日：1975-06-24

    申请号：US28550972

    申请日：1972-08-31

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KOBAYASHI KAZUO ,  WATARI SHINJIRO ,  KATO TSUTOMU ,  SHIRAISHI MINORU ,  KAWANA YOSHIO

    IPC: B01J2/00 ,  B01J20/20 ,  C01B31/08 ,  C01B31/10 ,  C01B31/14

    CPC classification number: C01B32/382 ,  Y10S210/924

    Abstract: A sphere of carbon which encloses an empty space and has pores formed in the shell thereof so as to provide free passage between the interior and the exterior of the sphere is obtained by coating a spherical core with a layer of finely divided coal and subjecting the coated sphere to a heat treatment at a temperature higher than the decomposition temperature of the substance of which the core is formed. The heat treatment causes the core to be thermally decomposed and evacuated from the coat which, by this time, has been hardened to a shell. A lightweight hollow sphere of activated carbon which has been activated not merely on the outer surface of the sphere but equally on the inner surface defining the empty space is produced by calcining for activation the said sphere of finely divided coal, with the said fine pores retained intact.

    Abstract translation: 通过用细碎煤层涂覆球形芯并将涂覆的球体覆盖在外壳上，并且在其壳体中形成有孔以便在球体的内部和外部之间提供自由通道的碳球体 在高于形成芯的物质的分解温度的温度下进行热处理。 热处理使芯体被热分解并从涂层中排出，此时，已将其硬化成壳。 通过煅烧活化所述细碎煤球，产生不仅仅在球体的外表面上而且同等地限定在空的空间的内表面上的活性炭的轻质空心球，所述细孔保留 完整。

    PRODUCTION OF SILICON NITRIDE WHISKER
    4.
    发明专利
    PRODUCTION OF SILICON NITRIDE WHISKER 失效

    公开(公告)号：JPH02153900A

    公开(公告)日：1990-06-13

    申请号：JP30935088

    申请日：1988-12-06

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YAMADA YASUHIRO ,  SHIRAISHI MINORU ,  HAGIWARA SHIGEJI ,  HONDA HIDEMASA

    IPC: C30B29/62

    Abstract: PURPOSE:To obtain silicon nitride whisker with simple operation by supporting polysiloxanes having a specific substituent on a carbonaceous substance and heating in nitrogen stream. CONSTITUTION:The objective silicon nitride whisker is produced by supporting dimethylpolysiloxane, ether methylpolysiloxane or methylalkylpolysiloxane (organic silicon compounds) on a carbonaceous substance and treating in nitrogen gas stream at 1,200-1,500 deg.C. The carbonaceous substance supporting said polysiloxanes is coke, fiber or activated carbon. There is no or extremely little formation of whisker by using other inorganic substances such as alumina or silicon dioxide. It is necessary to support the polysiloxane on a carbonaceous substance in order to produce a large quantity of whiskers. The coke may be a green coke containing several % of volatile component (organic material) or a calcined coke produced by calcining the green coke.

    PRODUCTION OF CARBON FILM
    7.
    发明专利
    PRODUCTION OF CARBON FILM 失效

    公开(公告)号：JPS6385010A

    公开(公告)日：1988-04-15

    申请号：JP22743486

    申请日：1986-09-26

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YAMADA YOSHIO ,  SHIRAISHI MINORU

    IPC: C01B31/02 ,  H01M4/06

    Abstract: PURPOSE:To obtain a thin and uniform carbon film useful for electrode for cells, various electronic materials readily, by producing a high polymer film from benzene by electrolytic oxidation polymerization method and then carbonizing. CONSTITUTION:Benzene is dissolved in a solvent containing a supporting electrolyte, an electric current is made to flow between two electrodes and benzene is subjected to electrolytic oxidation polymerization. Polyphenylene formed on the anode plate is washed and dried to give a polyphenylene film. Then the high polymer film is heat-treated in an inert gas and carbonized to give the aimed carbon film.

    PRODUCTION OF MOLECULAR SIEVE CARBON MEMBRANE
    8.
    发明专利
    PRODUCTION OF MOLECULAR SIEVE CARBON MEMBRANE 失效

    公开(公告)号：JPH04326930A

    公开(公告)日：1992-11-16

    申请号：JP12206691

    申请日：1991-04-24

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： HATORI HIROAKI ,  YAMADA YOSHIO ,  SHIRAISHI MINORU

    IPC: B01D71/02 ,  B01D71/52 ,  B01D71/56 ,  B01D71/64

    Abstract: PURPOSE:To obtain a molecular sieve carbon membrane having clear molecular sieve capacity and high separation efficiency. CONSTITUTION:An aromatic polymer membrane is carbonized independently or in the farm deposited on a polymer porous support to form a molecular sieve carbon membrane having an extremely thin molecular sieve carbon layer having no crack or pinhole. This membrane has homogenous pores with a diameter of 10A or less and shows the permselectivity to gas and sieve action due to the size of a molecule and high separation efficiency.

    METHOD FOR PRODUCING GRAPHITE FIBER
    9.
    发明专利
    METHOD FOR PRODUCING GRAPHITE FIBER 失效

    公开(公告)号：JPH04136222A

    公开(公告)日：1992-05-11

    申请号：JP25419090

    申请日：1990-09-26

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： HATORI HIROAKI ,  YAMADA YOSHIO ,  SHIRAISHI MINORU

    IPC: D01F9/22 ,  D01F8/16 ,  D01F9/24 ,  D01F11/14

    Abstract: PURPOSE:To simply and industrially provide a graphite filament having an excellent crystallization property and conductivity by subjecting a conjugate filament to a thermal treatment, the conjugate fiber being prepared by disposing an aromatic polymer layer on a single filament of a polymer, etc. CONSTITUTION:A conjugate filament is subjected to a thermal treatment to provide the objective graphitized filament, the conjugated filament being prepared by disposing the layer of an aromatic polymer (preferably a polyimide, polyamide, polyamideimide, polyoxadiazole, polyarylate, polybenzimidazole or polyphenylene vinylene) on the single filament of a polymer or carbon.

    PRODUCTION OF AQUEOUS SOLUTION OF ALKALI SILICATE
    10.
    发明专利
    PRODUCTION OF AQUEOUS SOLUTION OF ALKALI SILICATE 失效

    公开(公告)号：JPH01261221A

    公开(公告)日：1989-10-18

    申请号：JP8914988

    申请日：1988-04-13

    Applicant: AGENCY IND SCIENCE TECHN ,  NIPPON CHEMICAL IND

    Inventor： KOSUGE KATSUNORI ,  HAMADA YOSHIHISA ,  SHIRAISHI MINORU ,  TAKEMORI MAKOTO ,  OTSUKA RYOHEI ,  SAKAMOTO HISAFUMI ,  KOSHIMIZU HITOSHI

    IPC: C01B33/32

    Abstract: PURPOSE:To efficiently obtain an aqueous solution of an alkali silicate by wet method, by decomposing serpentine with a mineral acid to form fibrous aggregate silica gel and dissolving the gel in an aqueous solution of a caustic alkali. CONSTITUTION:Serpentine is decomposed with a mineral acid to form silica gel of fibrous aggregate. Then the silica gel is dissolved in an aqueous solution of a caustic alkali to give the aimed solution. A starting raw material of the fibrous aggregate preferably has a high content of serpentine minerals. Ground serpentine is used as serpentine of raw material, a considerable limitation of particle size is not required but too large serpentine is not preferable because it takes a long time in reaction and serpentine has preferably about -100 meshes. In the condition of the dissolution operation, stirring at normal temperature under pressure is sufficient and the dissolution reaction is smoothly advanced without especially loading pressure. As for temperature, since a little heating as accelerating effects on dissolution rate, heating is properly applied to an additional condition.

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