Hydroformylation process

Details Hydroformylation process Hydroformylation process

C - Chemistry, Metallurgy

07

C

C07C 47/02 (2006.01) B01J 31/24 (2006.01) C07C 45/49 (2006.01) C07C 45/50 (2006.01) C07C 45/80 (2006.01) C07C 45/82 (2006.01) C07C 47/12 (2006.01)

Patent

CA 2204133

Described is a process for hydroformylation of an olefinic compound, which comprises, upon the reaction of the olefinic compound with hydrogen and carbon monoxide in order to prepare, in an industrially advantageous manner, various aldehydes each of which is useful as a starting material for fine chemicals such as pharmaceuticals and agricultural chemicals, alcohols for a plasticizer or starting materials such as diol, dicarboxylic acid, and diamine for the synthesis of a polymer compound, carrying out the reaction in the presence of: a) a rhodium compound, b) a tertiary organic phosphorus compound represented by the following formula (1): P(X1)(X2)(X3-SO3M) (1) wherein X1 and X2 each independently represents a monovalent hydrocarbon group having 1-15 carbon atoms and X, represents a divalent hydrocarbon group having 1-15 carbon atoms and M represents an alkali metal, and c) a polar organic compound; separating the rhodium compound, the tertiary organic phosphorus compound represented by the formula (1) and the polar organic compound from the resulting reaction mixture by extraction with water; subjecting the extracted water layer to removal of water and addition of at least one acidic -42- substance selected from sulfonic acids to prepare a concentrate containing the rhodium compound, the tertiary organic phosphorus compound represented by the formula (1) and the polar organic compound; and recycling the resulting concentrate to a reactor for reuse.

La présente invention concerne un procédé d'hydroformylation d'un composé oléfinique grâce à la réaction de celui-ci avec l'hydrogène et le monoxyde de carbone. Ce procédé comprend l'exécution de la réaction en présence de: a) un composé de rhodium; b) un composé organophosphorique tertiaire, représenté par la formule générale (1): P(X1)(X2)(X3-SO3M), X1 et X2 représentant chacun un groupement hydrocarbure C1-15 monovalent, X3 représentant un groupement hydrocarbure C1-15 divalent, et M représentant un métal alcalin; et c) un composé polaire organique; le procédé comprend ensuite l'extraction du mélange de réaction obtenu avec de l'eau afin d'en séparer le composé de rhodium, le composé de la formule (1) et le composé polaire organique; l'élimination de l'eau de la couche aqueuse ainsi séparée; l'addition d'au moins un acide sulfonique pour obtenir un concentré contenant le composé de la formule (1) et le composé polaire organique; et l'envoi de ce concentré dans le réacteur pour le réutiliser.

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