Production of halogens in an electrolysis cell with catalytic electrodes bonded to an ion transporting membrane and an oxygen depolarized cathode
US4191618A · kind A · utility
156Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Jul 6, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B9/19
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A halogen such as chlorine is generated by the electrolysis of aqueous halides in an electrolysis cell which includes an anode and a cathode separated by an ion transporting membrane. At least the cathode, which is a mass of noble metal catalytic particles and particles of a suitable binder, is bonded to the surface of the membrane. An oxygen containing gaseous stream is brought into contact with the bonded cathode to depolarize the cathode and prevent or limit discharge of hydrogen at the cathode, thereby substantially reducing the cell voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.