Electrolysis cell and electrodes
US6200440A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1998 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Mar 19, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B9/73
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Peroxydisulfuric acid and salts thereof are produced electrochemically from an aqueous acid sulfate solution in a cascading series of bipolar electrolytic cells having a cell body frames of polyvinyl chloride which are bonded with a vinyl ester polymer. An aqueous solution of peroxydisulfuric acid and salts thereof are withdrawn from the anode compartment of the last cell in the series, and metal impurities are removed by treatment with an ion exchange resin. Hydrogen peroxide is produced by hydrolyzing persulfuric acid and salts thereof. The sulfuric acid produced is recycled to the first cell in the series of cascading electrolytic cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.