关键词: 次磷酸, 电解, 阳极材料, 清洁生产

Abstract: In order to get a low-cost and clean production method for synthesis of high purity hypophosphorous acid，six-compartment electrolytic cell was taken as the reaction tank，and graphite，Ti-PbO₂，and titanium coated with ruthenium as anodes respectively，and stainless steel as cathode electrode.Result showed that the six-compartment electrolytic cell could be used to improve the purity of hypophosphorous acid and the Ti-PbO₂ electrode was the optimal anode material in anodic potential，product concentration，and current efficiency comparing with other two popular materials at home and abroad.With Ti-PbO₂ as anode，there was no solid deposit，impurity，and changing of anodic liquid.The whole process was simple and it only needed to make up water，which was consumed during the electrolysis.Therefore，it′s a cleaner production.Furthermore，the hypophosphorous acid product′s impurity contents in decompression enrichment could satisfy the requirements of the capacitor production under optimal electrolysis current，temperature，time，and raw material concentration.

Key words: hypophosphorous acid, electrolysis, anode material, cleaner production