Process for the preparation of aldehydes

摘要

Production of aldehydes by reacting olefinically unsaturated compounds with carbon monoxide and hydrogen at 20-200 degrees C and 0.1-50 MPa in the presence of a rhodium catalyst, comprises adding more rhodium to the process. The additional rhodium added is in the form of a product (I) obtained by reacting rhodium metal and/or rhodium compounds with carbon monoxide and hydrogen in the presence of a complexing agent.