METHOD FOR ELECTROCHEMICALLY MANUFACTURING ALKALI METAL FROM ALKALI METAL AMALGAM

    公开(公告)号:JP2000219989A

    公开(公告)日:2000-08-08

    申请号:JP37660199

    申请日:1999-12-15

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To reduce the energy consumption in the manufacture by maintaining the dynamic condition of an alkali metal amalgam forming an anode. SOLUTION: A liquid anode preferably maintains its dynamic condition by the stirring under the atmospheric pressure or the pressure slightly higher than the atmospheric pressure, or the circulation by a pump, or the combination thereof. An anode area and a cathode area are separated from each other by a solid electrolyte which is an alkali metal ion conductor through which helium is impermeable. For example, appropriate solid electrolytes in manufacturing sodium include sodium β"-alumina, and sodium p-alumina. The manufacturing temperature is preferably 310-400 deg.C for sodium, and 260-400 deg.C for potassium. The current density during the manufacture is generally >=250 A/m2, but preferably 0.5-10 kA/m2 for sodium, and 0.3-3 kA/m2 for potassium.

    ELECTROCHEMICAL PRODUCTION OF LITHIUM

    公开(公告)号:JP2000290791A

    公开(公告)日:2000-10-17

    申请号:JP2000081115

    申请日:2000-03-23

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To provide an improving method as to an electrochemical production of metallic lithium high in energy efficiency. SOLUTION: By using a method consisting of a stage (I) in which lithium amalgam is produced from and aq. soln. of at least one kind of lithium salt and a stage (II) in which, using an anode contg. lithium amalgam, a solid electrolyte having lithium ion conductivity and a cathode of fused lithium, electrolysis is executed while the driving state of lithium amalgam as the anode is maintained, starting from the aq. soln. of at least one kind of lithium salt, metallic lithium is produced.

    Method of manufacturing lithium ion conductor
    6.
    发明专利
    Method of manufacturing lithium ion conductor 审中-公开
    制造锂离子电导体的方法

    公开(公告)号:JP2004196653A

    公开(公告)日:2004-07-15

    申请号:JP2003411193

    申请日:2003-12-10

    CPC classification number: C25C3/02 C22B26/12 C25C7/04 Y10T29/49108

    Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a lithium ion conductor for recovering lithium from lithium amalgam. SOLUTION: The solid lithium ion conductor having the composition, Li 4-X Si I-X P X O 4 (wherein, X is 0.3 to 0.7) is prepared by shaping and calcining Li 4-X Si I-X P X O 4 (wherein, X is 0.3 to 0.7) and/or a compound converted into the same during the calcination, wherein Li 4-X Si I-X P X O 4 and/or the compound converted into the same during the calcination are/is used in a state of powder having ≤5 μm average particle diameter. COPYRIGHT: (C)2004,JPO&NCIPI

    Abstract translation: 解决的问题:提供一种从锂汞齐中回收锂的锂离子导体的制造方法。 具有组成的固体锂离子导体,其中R 1,R 2,R 3, SB>(其中,X为0.3〜0.7)是通过成形和煅烧Li 3 SB-X X SB / 4 (其中,X为0.3〜0.7)和/或在煅烧期间转化成其的化合物,其中Li 4-X 和/或在煅烧期间转化为其的化合物以具有≤5μm平均粒径的粉末的状态使用。 版权所有(C)2004,JPO&NCIPI

    ELECTROLYTIC CELL FOR PRODUCING ALKALI METAL

    公开(公告)号:JP2001059196A

    公开(公告)日:2001-03-06

    申请号:JP2000172849

    申请日:2000-06-09

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To energically preferably produce sodium and potassium. SOLUTION: This electrolytic cell being a stirred state comprises an alkali metal amalgam-contg. anode, a solid electrolyte having alkali metal ion conductivity and a cathode. The solid electrolyte and the cathode are mutually divided through an electrolytic soln. As the electyrolyte, dissolved NaOH, NaNH2 or a mixture thereof, or dissolved KOH, KNH2 or a mixture of is used, and the solid electrolyte can be selected from the group consisting of sodium β-alumina, sodium β"-alumina and β/β"-alumina or the group consisting of potassium β-alumina, potassium β" and potassium β/β"-alumina.

    METHOD FOR ELECTROCHEMICALLY REDUCING ORGANIC COMPOUND

    公开(公告)号:JPH1046381A

    公开(公告)日:1998-02-17

    申请号:JP13368897

    申请日:1997-05-23

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To electrochemically reduce an org. compd. in a high space-time yield by bringing the org. compd. into contact with a conductive substrate and a cathode having a conductive polarized layer formed formed on the substrate by deposition. SOLUTION: Adiponitrile is reduced to hexamethylenediamine in a split electrolytic cell divided into a cathode compartment and an anode compartment with a cation-exchange membrane as a separation medium. In this case, a filter plate covered with the longitudinally diagonal woven fabric of steel alloy is used sa the cathode, a Ti plate coated with a Ta-Ir mixed oxide is used as the anode, and 2% sulfuric acid is employed as the anolyte, and the mixture of methanol, water, NaOH, adiponitrile and Raney nickel as the catholyte. Raney nickel is previously deposited on a cathode and then electrolytically reduced at 30-40 deg.C and 1000A/m current density. NaOH is removed by electrolysis, and the product is separated by distillation to recover hexamethylenediamine.

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