Hydroformylation process in the presence of a...

C - Chemistry – Metallurgy – 07 – C

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C07C 29/16 (2006.01) C07C 45/50 (2006.01) C07C 67/38 (2006.01)

Patent

CA 2510469

A hydroformylation process comprising reacting a compound having at least one olefinic carbon-to-carbon bond with hydrogen and carbon monoxide in the presence of a cobalt catalyst, the hydroformylation process being carried out in one or more reactors, at least one of which comprises a gas cap region and a liquid-containing region while in use, characterized in that a sulphur- containing additive is present on the inside walls of the gas cap region of the at least one reactor which comprises a gas cap region and a liquid- containing region. The sulphur-containing additive suppresses the formation of methane during the hydroformylation process.

L'invention concerne un procédé d'hydroformylation consistant à faire réagir un composé contenant au moins une liaison carbone-carbone oléfinique avec de l'hydrogène et du monoxyde de carbone en présence d'un catalyseur de cobalt, ce procédé d'hydroformylation étant mis en oeuvre dans un ou plusieurs réacteurs dont un au moins comprend une zone de calotte de gaz et une zone contenant du liquide en cours de fonctionnement, se caractérisant par la présence d'un additif contenant du soufre sur les parois intérieures de la zone de calotte de gaz dudit réacteur comprenant une zone de calotte de gaz et une zone contenant du liquide. L'additif contenant du soufre permet d'éviter la formation de méthane au cours du procédé d'hydroformylation.

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