中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

34 records (took 0.025 seconds)

    LITHIUM-CONTAINING KAOLINITE
    13.
    发明专利
    LITHIUM-CONTAINING KAOLINITE 失效

    公开(公告)号：JPH02311311A

    公开(公告)日：1990-12-26

    申请号：JP13366389

    申请日：1989-05-26

    Applicant: AGENCY IND SCIENCE TECHN ,  JINKOU NENDO GOSEI GIJUTSU KEN

    Inventor： MIYAWAKI RITSURO ,  WATAMURA SHINJI ,  MIZUTA HIROYUKI ,  MAEDA MASAKI ,  SHIBAZAKI YASUO ,  MARUYAMA SHINICHI ,  SAMEJIMA SOICHIRO

    IPC: C01B33/26

    Abstract: PURPOSE:To obtain a kaolinite having high plasticity and imparted with crystallinity and particle size similar to those of natural clay by adding Li ion to a mixture of amorphous silica and amorphous alumina and subjecting the mixture to hydrothermal synthesis. CONSTITUTION:An aqueous solution containing 0.05 to 0.5 mol/1 of Li ion is added to a powdery raw material consisting of a mixture of amorphous silica and amorphous alumina and the obtained mixture is subjected to hydrothermal synthesis in a pressure vessel at 150 to 300 deg.C for 1 to 30 days to obtain an Li-containing kaolinite containing lattice defects in the lamination plane, having mitigated strain between a tetrahedral layer and an octahedral layer similar to a kaolinite having ideal chemical composition and having promoted lamination structure.

    HEAT-RESISTANT POROUS CATALYST AND PREPARATION THEREOF
    15.
    发明专利
    HEAT-RESISTANT POROUS CATALYST AND PREPARATION THEREOF 失效

    公开(公告)号：JPS6434447A

    公开(公告)日：1989-02-03

    申请号：JP19031587

    申请日：1987-07-31

    Applicant: AGENCY IND SCIENCE TECHN ,  NICHIBI KK ,  OSAWA TAIKA KK ,  TAIMEI KAGAKU KOGYO KK

    Inventor： SHIBAZAKI YASUO ,  WATAMURA SHINJI ,  MIZUTA HIROYUKI ,  OSAWA TADASHI ,  IZAWA YUICHI ,  MIYAMATSU NORIHISA

    IPC: B01J23/00 ,  B01J23/74 ,  B01J23/755 ,  B01J35/04 ,  B01J37/30

    Abstract: PURPOSE:To extend an effective surface area and to improve heat resistance and physical strength, by bonding an active catalyst component to a carrier in a pore through a spinel-structure layer comprising Al and the metal of the active catalyst component, so as to form a multilayer thereof over the pore surface. CONSTITUTION:An aluminum compound and water are added to ion exchange fibers containing catalytic metal ions, and the resulting mixture is formed into a desired shape and calcined at a temperature not lower than 1,000 deg.C, thereby preparing a heat-resistant porous catalyst. This heat-resistant porous catalyst 1 comprises alpha-alumina as a carrier and a metal or its oxide as an active catalyst component. At least in a pore 4, the active catalyst component is so bonded to the carrier, through a spinel-structure layer 2 comprising aluminum and the metal of the active catalyst component, as to form a multilayer thereof over the pore surface.

    GAS ADSORBING AND DESORBING MATERIAL AND ITS PRODUCTION
    17.
    发明专利
    GAS ADSORBING AND DESORBING MATERIAL AND ITS PRODUCTION 失效

    公开(公告)号：JP2000176276A

    公开(公告)日：2000-06-27

    申请号：JP37581498

    申请日：1998-12-18

    Applicant: AGENCY IND SCIENCE TECHN ,  YKK CORP

    Inventor： AIKAWA KAZUO ,  FUKUSHIMA KYOKO ,  AKAIKE KAZUMOTO ,  SHIBAZAKI YASUO ,  WATAMURA SHINJI

    IPC: C04B38/00 ,  B01J20/06 ,  B01J20/08

    Abstract: PROBLEM TO BE SOLVED: To provide a gas adsorbing and desorbing material and its producing method so that the material can not only adsorb or adsorb and desorb an objective gas but also can drastically adsorb or desorb under a specified vapor pressure (relative humidity), and that a vapor pressure to initiate the drastic adsorption and/or desorption can be controlled as desired. SOLUTION: An acid or alkali aq. soln. is added or a soln. containing S2- ion is added to a metal salt aq. soln. to precipitate amorphous particles of metal hydroxides or metal sulfides, which are dried or heat treated at temperatures of 80 to 1,000 deg.C. The gas adsorbing and desorbing material is obtd. by this method and it consists of a dry powder or heat-treated powder having minute vacancies among the particles in amorphous molecular aggregate particles of the metal hydroxides or metal sulfides. As for the metal hydroxides or metal sulfides, at least one kind of metal hydroxide or sulfide selected from among Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Y, Zr, Nb and Mo is used.

    SYNTHESIS OF SPHERICAL ALUMINOSILICATE FROM HIGH-CONCENTRATION SOLUTION
    18.
    发明专利
    SYNTHESIS OF SPHERICAL ALUMINOSILICATE FROM HIGH-CONCENTRATION SOLUTION 失效

    公开(公告)号：JPH1179731A

    公开(公告)日：1999-03-23

    申请号：JP28629597

    申请日：1997-09-04

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： SUZUKI MASAYA ,  WATAMURA SHINJI ,  MAEDA MASAKI ,  INUKAI KEIICHI ,  OHASHI FUMIHIKO ,  SHIBAZAKI YASUO

    IPC: A61L9/01 ,  B01J20/12 ,  B01J20/16 ,  C01B13/32 ,  C01B33/26 ,  C01B33/40

    Abstract: PROBLEM TO BE SOLVED: To synthesize aluminosilicate in a large amt. in a short time while suppressing energy consumption by mixing a silicon compd. soln. of high concn. and an aluminum compd. soln., dropping an alkali soln. into the mixture to neutralize, and separating and collecting a solid content produced at room temp. SOLUTION: A silicon compd. soln. of 10 to 500 mmol, and an aluminum compd. soln. of 10 to 100 mmol are mixed with 0.5 to 2.0 molar ratio of silicon/ aluminum, and then an alkali soln. is dropped into the mixture soln. by 0.5 to 2 mol/min rate to neutralize and to produce a solid content at room temp. The produced solid content is separated by filtering and with a centrifugal separating machine, then cleaned, and dried to obtain spherical aluminosilicate. The obtd. spherical aluminosilicate is a highly functional porous material having 1 to 10 nm particle diameter, >=70 m /g specific surface area by nitrogen adsorption, and 0.5 to 2.0 silicon/aluminum ratio, and can be synthesized in a large amt. at room temp.

    METHOD FOR SEPARATING NITROGEN AND CARBON DIOXIDE USING CERAMIC SEPARATING MATERIAL
    19.
    发明专利
    METHOD FOR SEPARATING NITROGEN AND CARBON DIOXIDE USING CERAMIC SEPARATING MATERIAL 失效

    公开(公告)号：JPH0819722A

    公开(公告)日：1996-01-23

    申请号：JP30593493

    申请日：1993-11-10

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： HORIO MASAKAZU ,  SUZUKI KENJI ,  MORI TOSHIAKI ,  INUKAI KEIICHI ,  WATAMURA SHINJI

    IPC: B01D53/34 ,  B01D53/02 ,  B01D53/62 ,  B01J20/12 ,  B01J20/281 ,  C01B33/22 ,  C04B35/16

    Abstract: PURPOSE:To obtain a thermally stable separating material which can separate high temperature nitrogen and carbon dioxide by using ceramics prepared by a method in which sepiolite, after being ion-exchanged with zinc ion, is heat- treated as a separating material. CONSTITUTION:Sepiolte, a clay mineral, is added into an aqueous solution of zinc nitrate etc., and the mixture is stirred adequately and allowed to stand at room temperature so that sepiolite is ion-exchanged with zinc ion. The sepiolite is dried and heat-treated at 800 deg.C or below. When the separating material thus obtained is contacted with high temperature exhaust gas from fixed sources such as factories, nitrogen or carbon dioxide, after being adsorbed on the ceramics for the respective lengths of retention time, are desorbed. In this way, nitrogen and carbon dioxide are separated to contribute to the global environmental preservation.

Patent Agency Ranking