Recovering cobalt and bromide catalyst values using a strong anion exchange resin
US4162991A · kind A · utility
8Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1978 |
| Grant date | Jul 31, 1979 |
| Priority date | — |
| Expiry date | Mar 3, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Cobalt catalyst values are recovered from mother liquors remaining from oxidations to mono- or polycarboxylic acids in lower aliphatic monocarboxylic acids in presence of catalysts comprising cobalt and bromide ions by (1) if necessary, adjusting the cobalt and bromide concentrations so that they are within specified limits (2) adsorbing cobalt and bromide ions (differentially with respect to extraneous ions) on a strongly basic anion exchange resin and (3) desorbing cobalt and bromide ions with lower aliphatic monocarboxylic acid containing more than 10% by weight of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.