Method and apparatus for improving the life of an electrode
US4707240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Sep 15, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/223
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and apparatus are disclosed for improving the anodic life of an electrode in an electrodialysis stack which electrode comprises at least in part an area which is anodic during at least part of the duty time of said stack, which stack also comprises an electrode compartment (chamber, cell, space) containing said electrode, a counter-electrode in a counter-electrode compartment and interior compartments between said electrode compartment and said counter-electrode compartment, which method and apparatus comprises: PA0 (a) introducing into said electrode compartment (and means therefor) a solution capable of forming a film on said area which is anodic during at least part of the operating time of said stack, which film is characterized by being electronically conducting and substantially refractory anodically, and PA0 (b) causing a film derived at least in part from said solution to be formed on said area which is anodic during at least part of the duty time of said stack (and means therefor) said film characterized by being substantially refractory anodically and electronically conducting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.