Process for the removal of corrosion metals from carbonylation catalyst solutions
US8242040B2 · kind B2 · utility
1Cited by
3References
17Claims
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Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Mar 31, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J31/4038
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the removal of corrosion metal contaminants from a carbonylation catalyst solution comprising an iridium and/or rhodium carbonylation catalyst, an alkali and/or alkaline earth metal and corrosion metal contaminants in which the catalyst solution is contacted with a cation exchange resin having its active sites partially loaded with a sufficient amount of alkali and/or alkaline earth metal to maintain the concentration of said alkali and/or alkaline earth metal in the catalyst solution and recovering a catalyst solution of reduced corrosion metal contaminant content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.