Process for recovering rhodium catalyst
US6180071A · kind A · utility
1Cited by
20References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Mar 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for recovery rhodium from a solution of rhodium and tar produced in the carbonylation of methanol, methyl acetate dimethyl ester and/or reactive derivatives thereof involves extraction with a combination of water, methyl iodide and methyl acetate in which methyl acetate is at least 20% of the methyl iodide plus methyl acetate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.