Method of producing silica sols by electrodialysis

Details Method of producing silica sols by electrodialysis Method of producing silica sols by electrodialysis

C - Chemistry, Metallurgy

01

B

204/170, 204/98.

C01B 33/141 (2006.01) B01J 13/00 (2006.01) C01G 30/00 (2006.01)

Patent

CA 1084872

METHOD OF PRODUCING SILICA SOLS BY ELECTRODIALYSIS Abstract of the Disclosure 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 mater- ial into the cathode compartment by positioning a cation permselec- tive membrane between the anode compartment and the cathode com- partment, and removing the so-produced silica sol from the anode compartment of the electrolytic cell.

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