Patent ID: 8440067
Filing Date: 2013-05-14
Classification: C22B,C25B,Y02P

Abstract:
1. A process for removing small amounts of water in the range from 0.3 to 5.0 ppm and possible further constituents from alkali metal amalgam resulting from a chloralkali electrolysis, wherein the alkali metal amalgam is brought into contact with a catalytically active element which is insoluble in mercury and catalyzes the reaction of water with the alkali metal amalgam and the possible further constituents to form hydroxides and hydrogen; wherein the catalytically active element is selected from the group consisting of iron, nickel, cobalt, titanium, chromium, molybdenum, steels inert against mercury, tungsten carbide and graphite; and wherein the alkali metal amalgam is subsequently passed to an electrolysis.