Consumption of hypochlorite values contained in chlorate solutions of electrolysis
US5124009A · kind A · utility
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7Claims
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Key dates
| Filing date | Feb 22, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Feb 22, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B11/145
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The objectionable hypochlorite values, ClO.sup.- ions, contained in a solution of an alkali metal chlorate produced by the electrolysis of an aqueous solution of the corresponding chloride of the alkali metal, are effectively destroyed (consumed) without adversely affecting the valence state of the hexavalant chromium values also contained therein, by intimately contacting such chlorate solution with an effective amount of hydrogen peroxide such that the molar ratio hydrogen peroxide/hypochlorites is at least one and no greater than 3 and the molar ratio available hydrogen peroxide/hypochlorites is at least one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.