| 摘要 |
Aldehydes are prepared by reacting a mixture of an olefine gas or vapour, carbon monoxide and hydrogen in the presence of a cobalt oxo catalyst soluble in the products. The concentration of the olefine in the mixture to be reacted is from 5 to 20% by volume, and ethyene, if present in the mixture containing an olefine with 3 or 4 C atoms, is in an amount less than 5%, and the temperature of the reaction is at least 75 DEG C., and the pressure of the mixture at least 40 atmospheres. The process is preferably continuous and cobalt oxide on kieselguhr or silica gel is the preferred catalyst. Examples describe the reaction of propylene to form butyraldehyde; of a mixture of propylene and ethylene to form propionaldehyde and n- and is obutyraldehyde; and of ethylene, propylene and butene-1 to form propionaldehyde, n- and iso - butyraldehyde, n - valeraldehyde and 2 - methylbutyraldehyde. |
