Anode for alkali chloride electrolysis

    公开(公告)号:DE1812522A1

    公开(公告)日:1970-06-18

    申请号:DE1812522

    申请日:1968-12-04

    Applicant: BASF AG

    Abstract: Anode is produced by coating Ti, Ta or other anodically-passifiable sub-group IV- metal powder with platinum metal(s) or alloy and applying to electrically conducting support of first type of metal, using plasma torch, pref. with H2-A mixture as carrier gas. Powder pref. in treated with aqs. HF solution and platinum group metal salt(s). These anodes are highly durable and resistant to electrolyte.

    7.
    发明专利
    未知

    公开(公告)号:DE1518548A1

    公开(公告)日:1969-05-14

    申请号:DE1518548

    申请日:1965-04-14

    Applicant: BASF AG

    Abstract: 1,137,544. Electrolytic hydrodimerization of acrylonitrile. BADISCHE ANILIN- & SODA FABRIK A.G. 13 April, 1966 [14 April, 1965], No. 16133/66. Heading C2C. [Also in Division C7] Adiponitrile is produced electrolytically by hydrodimerizing acrylonitrile as catholyte in a cell wherein the anolyte and catholyte are separated by a solid polyelectrolyte which directly covers either or both of the opposed faces of the two electrodes, or joins together the anode and cathode, leaving no interspace between the electrode and polyelectrolyte, the or each covered electrode being permeable to the anolyte and/or catholyte. The catholyte or anloyte may contain a conducting salt solution or water; an acid and/or a base may be added to the anolyte. The polyelectrolyte may be a copolymer layer, e.g. of (dimethyl) styrene and divinylbenzene, phenyl-formaldehyde resins or vinyl chloride containing sulphonic or carboxylic or arsenic acid, phosphonium, ammonium, phosphine, hydroxyl or amino groups; or particles of inorganic ion exchanger, e.g. hydrated zirconium oxides, glauconite, zeolite (hydroxy) apatite, distributed in a binder, e.g. polystyrene, polybutadiene, polyisoprene or cement. The anode may be a porous sintered graphite tube surrounded first by the copolymer layer then by the cathode, e.g. of amalgamated silver netting, the catholyte being acrylonitrile and tetraethyl ammonium p-toluene-sulphonate solution, and the anolyte pure water. The anode may also be of a platinum group metal, lead, lead dioxide, sintered nickel, nickel coated with nickel sulphide or arsenide, or magnetite, and may be vibrated; the cathode may also be of lead, lead amalgams or alloys.

Patent Agency Ranking