The invention belongs to the technical field of the
catalyst regeneration, and particularly relates to a regeneration method of an inactivated
rhodium complex catalyst used for a carbonyl reaction. The regeneration method of the inactivated
rhodium complex catalyst comprises the steps of: firstly mixing a reaction liquid containing an inactivated
rhodium complex catalyst with alkynol or ester containing 3-6 carbon atoms, and
carboxylic acid, and carrying out the regeneration reaction in the existence of
hydrogen or
nitrogen at the reaction pressure of 0.1-1.0MPa; then adding an aqueous
tertiary alkanol amine solution into the obtained reaction liquid, neutralizing unreacted
carboxylic acid or
halide to generate
water soluble salt; then carrying out the settlement separation to obtain an organic phase containing a rhodium complex catalyst; and washing the organic phase with water to obtain a solution containing the rhodium complex catalyst, the catalytic activity of which is higher than the catalytic activity of the existing inactivated rhodium catalyst. The regeneration method of the inactivated rhodium complex catalyst solves the
polymerization problem in the regeneration process of the alkynol or the ester containing 3-6 carbon atoms. The regeneration method of the inactivated rhodium complex catalyst has the advantages of low
reagent dosage, mild
reaction conditions, easiness in technological process, and high generated catalyst activity, and also has the
advantage that the regeneration method of the inactivated rhodium complex can carry out online regeneration of the catalyst under the condition that the carbonyl reaction can be continuously carried out without any pauses.