Method of oxidizing a polyvalent metal
US4330478A · kind A · utility
1Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1979 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Dec 26, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G49/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process of carrying out oxidation-reduction reactions such as oxidation of hydrogen sulfide to sulfur, in which a polyvalent metal chelate with a certain class of polycarboxylic acid is employed, the metal being reduced from a higher valence state to a lower valence state during reduction and back to the higher valence state by oxidation. The class of polycarboxylic acids are those which have a substituent which enhances acidity yet is stable toward oxidation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.