Preparation of acetaldehyde
US4293718A · kind A · utility
11Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Oct 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/49
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Acetaldehyde is prepared by reacting methanol with a mixture comprising hydrogen and carbon monoxide, which mixture comprises at least 25 mol percent hydrogen, in the presence of cobalt, an ionic iodide and a halogen-containing promoter which is different from the ionic iodide. The reaction is best carried out at a temperature of at least 165.degree. C. and with a ratio of gram-ions of I.sup.- originating from the ionic iodide to gram-atoms of cobalt of at least 5 and a ratio of gram-atoms of halogen from the halogen-containing promoter to gram-ions of I.sup.- in the range of about 0.001 to about 0.1
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.