| 摘要 |
A hydroformylation product containing an aldehyde, an alcohol and cobalt is decobalted by contacting the mixture with an aqueous solution of a C1-C5 straight-chain alcohol having at least one carbon atom less than the product alcohol, the amount of alcohol in the aqueous solution being approximately the stoichiometric amount sufficient to react with and form a complex with the dicobalt octacarbonyl in the hydroformylation reaction mixture. The preferred C1-C5 alcohol is methanol. If the temperature of the solution is maintained below 24 DEG C. and the pressure in the range 1-280 kg./sq. cm., the resulting complex will remain in the aqueous layer and additional alcohol is introduced to maintain the required concentration. If however the temperature is maintained above 24 DEG C. and the pressure is in the range 1-10 kg./sq. cm. the complex will be decomposed to form cobalt ions soluble in the aqueous medium, carbon monoxide which will leave the reaction zone and alcohol which is reused to form more complex. |
