METHOD FOR HYDROFORMYLATION Russian patent published in 2017 - IPC B01J31/24 B01J31/40 B01J19/00 C07C45/50 

FIELD: chemistry.

SUBSTANCE: treatment method involves flowable hydroformylation reaction product contacting with an aqueous buffer solution to neutralise at least some of the acid phosphorus compound to form a neutralised acid phosphorus compound. The hydroformylation reaction product comprises an acidic phosphorus compound, a metal complex catalyst with an organophosphorus ligand that contains a group 8, 9 or 10 metal complex forming an organophosphorus ligand complex and optionally a free organophosphorus ligand. The buffer solution contains at least one unsaturated aliphatic carboxylic acid salt. Salt concentration in the buffer solution is 0.001-0.8 M and the pH value of the buffer solution is in the range of 6-8.

EFFECT: effective buffer removal of acid by-products from phosphite ligand degradation and promotion of selective hydrolysis of diorganophosphite by-products without adverse effect on the hydroformylation process.

7 cl, 1 tbl, 2 ex