| 摘要 |
1,146,805. Electrolysis of alkali metal halide solution in mercury cells. DYNAMIT NOBEL A.G. Oct.9, 1967 [Oct.10, 1966], No.46033/67. Heading C7B. In electrolyzing an aqueous solution of an alkali metal chloride in a mercury cathode cell, a metal is introduced into the mercury which is capable of forming with a metal liberated during electrolysis and insoluble in mercury an intermetallic compound soluble in the mercury cathode, thereby reducing or avoiding evolution of hydrogen. The metal introduced may be provided by adding a soluble salt of the metal to the alkali metal chloride solution to yield on electrolysis a concentration of the metal in the cathode of 0À001 to 0À5 mole per cent. The metal introduced may be Cu, Zn, In, Sn or Pb or a mixture or alloy of two or more of these metals and the mercuryinsoluble metal may be Ge, V, As, Sb, Cr, Mo, W, Ni or Co or two or more thereof. |
