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    METHOD FOR ELECTROCHEMICALLY MANUFACTURING ALKALI METAL FROM ALKALI METAL AMALGAM
    3.
    发明专利
    METHOD FOR ELECTROCHEMICALLY MANUFACTURING ALKALI METAL FROM ALKALI METAL AMALGAM 失效

    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

    Inventor： HUBER GUENTHER DIPL ING ,  PUETTER HERMANN ,  SCHIERLE A KERSTIN ,  SCHLAEFER DIETER DR ,  GUTH JOSEF ,  SCHUBE BERND ,  LENZ DIETHARD

    IPC: C22B26/00 ,  C25C1/20 ,  C25C3/02

    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
    5.
    发明专利
    ELECTROCHEMICAL PRODUCTION OF LITHIUM 失效

    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

    Inventor： SCHIERLE KERSTIN ,  PUETTER HERMANN ,  HUBER GUENTHER DIPL ING ,  SCHLAEFER DIETER DR ,  GUTH JOSEF

    IPC: C25C1/02 ,  C25C1/24 ,  C25C3/02

    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.

    ELECTROLYTIC CELL FOR PRODUCING ALKALI METAL
    6.
    发明专利
    ELECTROLYTIC CELL FOR PRODUCING ALKALI METAL 失效

    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

    Inventor： HUBER GUENTHER DIPL ING ,  PUETTER HERMANN ,  SCHIERLE A KERSTIN ,  SCHLAEFER DIETER DR ,  GUTH JOSEF

    IPC: C25B1/36 ,  C25C3/02 ,  C25C7/00 ,  C25C7/02 ,  C25C7/04 ,  C25D1/14

    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 CONTROLLING FLOW RESISTANCE OF DIAPHRAGM
    7.
    发明专利
    METHOD FOR CONTROLLING FLOW RESISTANCE OF DIAPHRAGM 失效

    公开(公告)号：JPH10273792A

    公开(公告)日：1998-10-13

    申请号：JP33406897

    申请日：1997-12-04

    Applicant: BASF AG

    Inventor： FRIEDRICH HOLGER DR ,  HOPPE KLAUS-DIETER DR ,  LEUTNER BERND DR ,  SCHLAEFER DIETER DR ,  HECKY KURT

    IPC: C25B13/08 ,  C25B13/00 ,  C25B15/00

    Abstract: PROBLEM TO BE SOLVED: To control the flow resistance of a diaphragm in a desired range with good reliability by treating the diaphragm based on a fibrous material with a fluorine-contg. dispersion during or after the production of the diaphragm. SOLUTION: A diluent, sodium chloride, sodium hydroxide, sterilizer, surfactant, antifoaming agent, etc., are incorporated into a powdered and cleaned fiber to obtain a fibrous aq. slurry. A dispersion contg. a fluorine-contg. component and a soln. contg. the precursor of ZrO2 , as required, are added to the slurry while agitating to produce a recirculating diaphragm. Meanwhile, the diaphragm treatment is conducted during electrolysis, preferably during alkali chloride electrolysis. The amt. of the fluorine-contg. component to be used and incorporated in the dispersion is preferably controlled to 0.1 to 30 wt.% of the fibrous material in the diaphragm, and the fluorine-contg. component used in the diaphragm should be present at 30 to 500 g/m with respect to the area of the diaphragm.

    10.
    发明专利
    未知

    公开(公告)号：DE3532866A1

    公开(公告)日：1987-03-26

    申请号：DE3532866

    申请日：1985-09-14

    Applicant: BASF AG

    Inventor： ROOS HANS DR ,  SCHLAEFER DIETER DR ,  BITTLER KNUT DR ,  SCHIEDERMAIER RICHARD DR

    IPC: C23C18/34 ,  C25B11/04 ,  C25B11/06 ,  C25B1/34

    Abstract: 1. A process for manufacturing an electrode consisting of an electrically conducting support structure bearing an electromechanically active boron-containing nickel layer deposited thereon by electroless deposition from a bath of a nickel(II) salt and a complexing agent by reduction with sodium boranate, wherein said bath contains a molar ratio of complexing agent : nickel salt of from 80 to 200, a molar ratio of sodium boranate : nickel salt of from 0.7 to 4.0, from 10 to 400 mmol/l of a hydroxide of sodium, potassium or an alkaline earth metal which is more strongly basic than ammonia, and from 10 to 80 mmol/l of nickel salt.

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