VERFAHREN ZUR KONTINUIERLICHEN HYDROFORMYLIERUNG

摘要

Reversing or at least minimizing catalyst deactivation or decomposition of rhodium-biphosphite complex catalysts. A 2-30C olefinically unsaturated compound is reacted with carbon monoxide and hydrogen in the presence of a rhodium-bisphosphite ligand complex catalyst, capable of being present in at least two states of different thermal and/or hydrolytic stability, to produce a mixture. The reaction mixture is separated into an aldehyde containing product stream and a recyclable catalyst stream by distillation. The reaction mixture is heated in the absence of molecular oxygen to obtain recyclable catalyst stream containing at least a portion of the catalyst having higher thermal and/or hydrolytic stability.