METHOD OF PRODUCING SILICA SOLS BY ELECTRODIALYSIS

摘要

METHOD OF PRODUCING SILICA SOLS BY ELECTRODIALYSIS A method of producing 2 silica sol is provided which comprises electrodialytically transferring alkali metal cations of a water soluble alkali metal silicate from an anode compartment of an electrolytic cell to a cathode compartment of the electrolytic cell while essentially preventing the migration of siliceous material into the cathode compartment by positioning a cation permselective membrane between the anode compartment and the cathode compartment, and removing the so-produced silica sol from the anode compartment of the electrolytic cell.