Method for dissolving metals by photocatalysis
US11920212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2019 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Nov 28, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for dissolving metals by photocatalysis. A metal-containing material to be dissolved is dispersed in a mixed solution of photocatalyst-containing cyanide and organic chloride; then, a photocatalyst is added; next, an oxygen-containing gas or a substance which is capable of generating oxygen is introduced; and irradiation is applied for a period of time to dissolve metals. Compared with the prior method, the present invention is advantageous in moderate reaction condition, energy conservation, environmental protection, low cost, and convenient operation, and is suitable for mass industrial treatment on metal dissolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.