Hydrocarbonylation of methanol to ethanol in the presence of added compounds
US4380681A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1980 |
| Grant date | Apr 19, 1983 |
| Priority date | — |
| Expiry date | Nov 26, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Ethanol is produced by reacting methanol with carbon dioxide and hydrogen at a temperature in the range 150.degree. to 250.degree. C., a pressure in the range 100 to 300 bars and a residence time in the range 10 minutes to 8 hours in the presence of: PA1 (i) a cobalt-containing catalyst optionally promoted with iodine, bromine or an organo-phosphorus compound and optionally in the presence of a stabilizer and, PA1 (ii) an additive which may be a monocarboxylic acid and/or a derivative thereof and, optionally, a non-polar solvent such as an alkane, benzene or an alkyl-substituted benzene. The preferred additives are acetic acid and methyl acetate. The presence of the additive increases the total realizable yield and selectivity to ethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.