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    6.
    发明专利
    未知

    公开(公告)号：AT274748B

    公开(公告)日：1969-09-25

    申请号：AT656966

    申请日：1966-07-08

    Applicant: BASF AG

    Inventor： BECK FRITZ DR ,  LEITNER HANS DR ,  GUTHKE HARALD DR ,  WINTERSBERGER KARL DR

    IPC: C25B3/25 ,  C25B3/29 ,  C25B9/17 ,  C25B15/00 ,  C25B15/06

    Abstract: 1,145,539. Electrolytic cell for producing organic compounds. BADISCHE ANILIN - & SODA - FABRIK A.G. July 8, 1966 [July 9, 1965; Jan.13, 1966], No.30712/66. Heading C7B. Apparatus for performing electro-chemical reactions of organic compounds in a flowing electrolyte, particularly the hydrodimerization of acrylonitrile to adiponitrile, comprises at least one uniformly liquid-permeable electrode pair 1a, b in which the electrodes are spaced less than 1 mm. apart, preferably separated by a liquid-permeable insulator 22, e.g. porous glass fibre cloth or paper, or porous plastic sheeting or ceramics. Electrolyte may be supplied and withdrawn, preferably recycled through a heat exchanger, to enable it to flow through the electrode pair(s). Pulsations may be imparted to the electrolyte and/or the electrode pair(s), e.g. by securing the electrode support and connection 4 to a vibrator 23. Current may be supplied through metal sleeves 2 pressed coaxially into plastic spoked-wheel shaped members 3. The electrodes may be made of metal or wire cloth, screens, expanded metal or sintered articles. Cathodes may be composed of Cu, brass or iron wire coated with Pb, Cd, Hg, Hg-Pb, Pb-Th, Hg-Ag, or Zn, Cu, Pt, Pd, Ni or graphite activated with Pt; anodes may be composed of metal or wire cloth or expanded metal support of Pt, Ni, Ti, or Ta coated with Ni or Pt with a coating of PbO 2 or Tl 2 O 3 , Pt, Pt-Ir, Pt-Rh, Ni, Fe, alloy steel or graphite. For producing adiponitrile with some propionitrile, examples are given of electrolytes composed of 66-81À5% acrylonitrile, 5-15% methanol or 20 or 22À5% isopropanol or 20% dioxane or dimethyl formamide, 7 or 8% water, and 0À5 or 1% tetramethyl ammonium methyl (or p-totuene) sulphate; the pH is regulated by adding acetic acid and triethylamine through a dropping funnel 27, and the off gas pipe passes through a reflux condenser 28. A solution of monomethyl adipate in methanol, electrochemically reacted with sodium methylate, is condensed to dimethyl sebacate. The apparatus may be used for other organic electro-chemical reactions.

    9.
    发明专利
    未知

    公开(公告)号：DE1693005A1

    公开(公告)日：1971-09-02

    申请号：DE1693005

    申请日：1968-03-16

    Applicant: BASF AG ,  BECK FRITZ DR

    Inventor： GUTHKE HARALD DR ,  LEITNER HANS DR

    IPC: C25B3/29

    Abstract: Process for the production of adiponitrile by direct electrochemical hydrodimerization of acrylonitrile using a medium containing acrylonitrile, an electrolyte salt, water and, if desired, a solvent at a temperature of from 10 DEG to 60 DEG C. at a pH of from 1 to 10. In the process, electrolysis is carried out in a cell having a liquid cathode which is contacted by a solid anode which is not wetted by the liquid cathode or into which the solid anode is immersed to a depth of up to 20 mm. Adiponitrile is an important intermediate for synthetic fiber manufacture.

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