| 摘要 |
<PICT:1102823/C6-C7/1> Electrolytic apparatus for simultaneously producing CI2 and an alkali metal carbonate from alkali metal chloride comprises a cathode 4 of perforated metal sheet or of metal mesh, an anode 1, a non-conductive porous diaphragm 3 (e.g. of asbestos) and means for providing a supply of CO2 into the cathode space 6, the diaphragm 3 being interposed between the cathode and anode, one side of the cathode 4 being provided with a metal coating whose hydrogen over-voltage differs by at least 200 millivolts from that of the nonconductive of the other side of the cathode, and the nonconductive diaphragm 3 being applied to the side of the cathode having the higher hydrogen overvoltage. Thus, a steel sheet cathode may be coated at 5, Fig. 1, with electrolytically and/or electro-phoretically deposited Raney Ni on the side remote from the diaphragm. ("Raney" is a Trade Mark") or may be coated (at 7, Fig.2 not shown) with Pb on the side bearing the diaphragm. |
