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US 4,915,927 AGranted
Production of chloric acid
AssigneeTenneco Canada Inc.
InventorsMarek Lipsztajn, Zbigniew Twardowski, Gerald Cowley
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Abstract
Chloric acid is produced in an electrolytic-electrodialytic process in which chlorate ions from a sodium chlorate solution are transferred through an anion-exchange membrane to combine with electrolytically-produced hydrogen ions in a compartment of a cell, from which the resulting chloric acid is recovered. The sodium ions are transferred through a cation-exchange membrane to combine with electrolytically-produced hydroxyl ions in another compartment of the cell, from which the resulting sodium hydroxide is recovered.
Claims9
A method for the production of chloric acid, which comprises:
- feeding an aqueous chlorate solution to an electrolytic-electrodialytic cell,
- electrolytically forming hydrogen ions in one compartment in said cell and transferring chlorate ions from said feed of aqueous chlorate solution across an anion-exchange membrane into said one compartment to form chloric acid therein,
- removing chloric acid from said one compartment,
- electrolytically forming hydroxyl ions in another compartment in said cell and transferring the cation of said chlorate from said feed of aqueous chlorate solution across a cation-exchange membrane into said another compartment to form a hydroxide of said cation, and
- removing an aqueous hydroxide solution from said another compartment.
2 more elements
Dependencies are inferred from the claim text.