Process for the production of acetaldehyde by the reaction of methanol with synthesis gas
US4225517A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1978 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Nov 6, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/845
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Acetaldehyde is produced by reacting methanol with hydrogen and carbon monoxide at elevated temperature and pressure in the presence of a catalyst cobalt, an iodide or a bromide and one of the elements arsenic, antimony or bismuth, in the form of a compound thereof, and in the additional presence of one or more of the following additives: PA1 (i) an inert liquid such as chlorobenzene, decanoic acid, a polydimethylsiloxane fluid or a methyl phenyl silicone fluid, PA1 (ii) an acid and/or an acid derivative such as acetic acid, acetic anhydride, propionic acid, phenylacetic acid, benzoic acid, methyl acetate or butyl acetate. PA1 (iii) and oxygen-containing organic compound such as 1,4-dioxane, tetrahydrofuran, di-n-propylether, diphenylether, acetone, acetaldehyde, n-propanol or n-butanol. PA1 (iv) a non-polar solvent such as an alkane, benzene or an alkyl-substituted benzene. The presence of the additive suppresses by-product formation and thereby improves the yield and selectivity to acetaldehyde.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.