Electrolytic process for manufacturing potassium peroxydiphospha

Details Electrolytic process for manufacturing potassium peroxydiphospha Electrolytic process for manufacturing potassium peroxydiphospha

1985-06-06

1986-12-02

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204263, C25B 128

Patent

active

046263276

ABSTRACT:
The invention provides a process to maintain the anolyte pH in the desired range while manufacturing potassium peroxydiphosphate on a commercial scale. The process comprises electrolyzing an alkaline anolyte containing potassium, phosphate, and hydroxyl ions at a platinum or noble metal anode optionally in the presence of a reaction promoter. The catholyte, an alkali metal hydroxide, is separated from the anolyte by a separating means permeable to anions permitting hydroxyl ions to be transferred into the anolyte thereby maintaining the pH of the anolyte in the desired range.

REFERENCES:
patent: 2589982 (1952-03-01), Wood et al.
patent: 3607142 (1971-09-01), Mucenieks
patent: 3616325 (1971-10-01), Mucenieks
Battaglia, C. et al., "The Dissociation Constants and the Kinetics of Hydrolysis of Peroxymonophosphoric Acid", Inorganic Chemistry, vol. 4, No. 4, Apr. 1965, pp. 552-558.
Tyurikova et al., "Certain Features of the Electrochemical Synthesis of Perphosphates from Phosphate Solution Without Additives", Electrokhimiya, vol. 16, No. 2, pp. 226-230.

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