| 摘要 |
In the conversion of olefinic compounds having n carbon atoms in the molecule to primary alcohols having 2n + 2 carbon atoms in the molecule, the olefinic compound is passed, together with hydrogen, carbon monoxide, a cobalt carbonylation catalyst and a zinciferous reaction modifier, into a carbonylation zone in which carbonylation temperatures and pressures (e.g. 230-375 DEG F. and 1500-4500 p.s.i.g.) are maintained, and the aldehyde product withdrawn from said zone is hydrogenated without the intermediate heat-soaking step of the parent Specification, but preferably after removal of metalliferous components. The reaction modifier, which is preferably employed in an amount of 0.05-0.5 per cent by weight based on the olefinic compound, may be a zinc salt and may be water-soluble or oil-soluble, and in the latter case may be dissolved in the olefinic compound. The carbonylation catalyst is advantageously cobalt oleate, preferably in an amount equivalent to 0.2-0.5 per cent by weight of cobalt based on the olefinic compound, or cobalt acetate. A suitable arrangement of apparatus is described with the aid of a drawing. Examples illustrate the application of the process to the conversion of heptenes to primary isohexadecyl alcohols, using as reaction modifiers mossy zinc, granulated zinc, zinc acetate, zinc oxide and zinc oleate. Also specified are zinc hydroxides, zinc carbonates and the zinc salt of cobalt hydrocarbonyl. |
