Catalyst system, process for its preparation and its application to the manufacture of aldehydes

摘要

The catalyst system is characterized in that it comprises: P Pat least one platinum complex of formula LPtX.sub.2 in which L is an organic compound containing at least two phosphorus atoms capable of coordinating platinum and X is a halogen atom, andP Pat least one combination formed between iron and an alkene carbonate, the alkene group preferably containing from 2 to 6 carbon atoms.P PThe process for its preparation is characterized in that at least one combination formed between iron adn the alkene carbonate is reacted with at least one platinum complex of formula LPtX.sub.2 in at least one solvent for the said complex, at a temperature of between 10 C. and the boiling point of the said solvent. The combination of iron and of an alkene carbonate may be formed by electrochemical reduction.P PApplication of the catalyst system to the manufacture of aldehydes by hydroformylation of an organic compound containing ethylenic unsaturation, consisting in reacting the said organic compound with a mixture of carbon monoxide and hydrogen in the presence of an effective quantity of the said catalyst system, at a temperature of between 10. degree. and 300 C. and at a pressure of between 10 and 350 bars.