| abstract |
The invention relates to a process for the oxonation of propylenento C, aldehydes at a pressure of about 30 MPanin the presence of a synthesis gas containingncarbon monoxide and hydrogen under actionna catalytic system comprisingnactive ingredient, cobalt carbonyl, in which it isncobalt is metered in the form of cobaltnsalts of lower fatty acids and regeneratesnnitric acid. From an aqueous nitrate solutionnof cobalt is precipitated with a solutionnsodium carbonate cobalt carbonatenwhich is isolated and dissolved in the acidnformate and / or acetic to formate solutionnand / or cobalt,nwhich are recycled to oxonation. |