Method for directly synthesizing unsaturated aldehydes from alcohol mixtures
US9365478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2013 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Oct 17, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/75
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns a method for directly synthesizing acrolein or methacrolein from a mixture of methanol and ethanol or propanol. The method of the invention comprises two successive phases: oxidation in the presence of a selective oxidation catalyst of the light alcohols of the feedstock, then condensation by aldolization of the aldehydes formed during oxidation in the presence of a condensation catalyst (aldolization). Alternatively, the two phases can be carried out in the presence of a single catalyst, in particular in the presence of a molybdenum-based selective oxidation catalyst. These two phases can be conducted in a single reactor or in two cascade reactors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.