Supported heteropolycyclic compounds in the separation and removal of late transition metals
US4876232A · kind A · utility
13Cited by
11References
2Claims
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Key dates
| Filing date | Sep 28, 1987 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Sep 28, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/288
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Compositions comprising carbon-based supports and containing heteropolycyclic compounds such as bipyridyl, phenanthroline or derivatives thereof are used in separation of dissolved late transition metals such as Fe, Co, Ni and Cu from solutions, in particular when such solutions contain high concentrations of other dissolved metals such as Zr, Hf, La, Al and Ba. Such compositions are also used to separate late transition metals such as Pt group metals from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.