Process for the reduction of chlorofluorocarbons and production of derivatives thereof in an electrolytic cell, cell for carrying out said reduction and process for removing the by-products formed within the cell

摘要

PCT No. PCT/ES96/00248 Sec. 371 Date Nov. 4, 1997 Sec. 102(e) Date Nov. 4, 1997 PCT Filed Dec. 26, 1996 PCT Pub. No. WO97/24162 PCT Pub. Date Apr. 10, 1997Process for the reduction of halogenated hydrocarbons and for obtaining their derivatives in an electrolytic cell which includes at least one cathode, at least one anode and a solution. A hydrogen-permeable membrane is arranged in the at least one anode such that the at least one anode constitutes a hydrogen-diffusion anode, and hydrogen or a hydrogen-containing gas is supplied to the hydrogen-permeable membrane. An electrolytic cell for the reduction of halogenated hydrocarbons includes at least one high overpotential cathode containing lead, cadmium, graphite, copper and/or tin, at least one hydrogen-diffusion anode containing palladium and a solution. Another process for the reduction of halogenated hydrocarbons and production of derivatives thereof entails dissolving the halogenated hydrocarbons in a solution, contacting the halogenated hydrocarbons in the solution with a high overpotential cathode and a hydrogen-diffusion anode including a hydrogen-permeable membrane, supplying hydrogen or a hydrogen-containing gas to the anode such that H2 diffuses through the anode, oxidizing such H2 at the anode to form H+ ions and electrons and electrochemically reducing the halogenated hydrocarbons at the cathode.