METHOD FOR INTRODUCTION AND RECLAMATION OF COBALT DURING HYDROFORMYLATION OF PROPYLENE Russian patent published in 2011 - IPC C07C45/50 C07C47/02 B01J23/75 B01J23/94 

FIELD: chemistry.

SUBSTANCE: invention discloses introduction of cobalt in form of a cobalt salt solution into a process for hydroformylation of propylene performed in the presence of a cobalt catalyst, where the said cobalt salt solution is specifically cobalt butyrate dissolved in a high-boiling azeotropic mixture of dimethyl acetamide (DMA) and dimethyl formamide (DMF) in butyric acid. Regeneration of a catalyst which is a mixture of cobalt butyrate and the azeotropic mixture of DMA and DMF with butyric acid is performed by treating the still residue after distillation of the end products with water, followed by stripping off the obtained aqueous extract and returning the stripped off residue to the hydroformylation step.

EFFECT: simple hydroformylation process.

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