Production of acetic acid with enhanced catalyst stability
US9598342B2 · kind B2 · utility
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Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | May 26, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes for the production of acetic acid by carbonylation of methanol and reactive derivatives thereof in a liquid phase reaction medium, wherein the reaction medium comprises a finite amount of water, a homogeneous catalyst, an alkyl halide promoter, and a catalyst stabilizer/co-promoter comprising an imidazolium cation R1R2Im+ as an iodide salt, wherein R1 and R2 are each independently a substituted or unsubstituted alkyl or cycloalkyl, with the proviso that R1 and R2 are not the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.