Method of removing potassium hydroxide from crystallized potassium ferrate (VI)
US4304760A · kind A · utility
14Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Oct 6, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G49/0081
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Potassium ferrate (VI), K.sub.2 FeO.sub.4, which has been crystallized from a concentrated aqueous solution of KOH is washed with an aqueous solution of a potassium salt of an inorganic acid to remove the residual KOH. The wash solution is at an alkaline pH and contains a high concentration of the potassium salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.