Electrolytic generation of manganese (III) ions in strong sulfuric acid
US10895016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | May 9, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B11/061
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrolytic cell and a method of electrochemical oxidation of manganese(II) ions to manganese(III) ions in the electrolytic cell are described. The electrolytic cell comprises (1) an electrolyte solution of manganese(II) ions in a solution of at least one acid; (2) a cathode immersed in the electrolyte solution; and (3) an anode immersed in the electrolyte solution and spaced apart from the cathode. Various anode materials are described including vitreous carbon, reticulated vitreous carbon, woven carbon fibers, lead and lead alloy. Once the electrolyte is oxidized to form a metastable complex of manganese(III) ions, a platable plastic may be contacted with the metastable complex to etch the platable plastic. In addition, a pretreatment step may also be performed on the platable plastic prior to contacting the platable plastic with the metastable complex to condition the plastic surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.