METHOD OF PREPARING PEROXOMONOSILICIC ACID Russian patent published in 2000 - IPC

FIELD: inorganic synthesis. SUBSTANCE: electrolysis of concentrated aqueous solutions of alkali metal silicate without additives inhibiting oxygen reaction is conducted on electrolyzer with diaphragm made of perfluorinated cationite membrane preventing overflow of electrolyte form anode department into cathode department at high densities of anode current 0.5-1.2 A/sq.cm. EFFECT: increased current efficiency due to changed composition and concentration of solution, increased density of anode current, and replaced electrolyzer diaphragm. 2 tbl, 6 ex