PROCESS OF MULTISTAGE HYDROFOMYLATION OF C-C-OLEFINS INTO ALDEHYDES AND/OR ALCOHOLS Russian patent published in 2007 - IPC C07C29/16 C07C31/125 C07C45/50 

FIELD: industrial organic synthesis.

SUBSTANCE: invention relates to technology of production of higher aldehydes and alcohols via hydrofomylation of olefins. C₆-C₂₄-olefins are subjected to hydrofomylation on cobalt or rhodium catalyst to achieve degree of conversion 20 to 98%, whereupon catalyst is removed from the product, regenerated and returned to hydrofomylation reactor. Resulting liquid mixture is separated by distillation into low-boiling olefins- and paraffins-containing fraction and bottom fraction containing aldehydes or aldehydes/alcohols mixture. In the case of alcohols being desired product, product fraction is subjected to hydrogenation on hydrogenation catalyst including copper, nickel, chromium, zinc, molybdenum, or mixture thereof, after which hydrogenate is routed to distillation. Olefins contained in low-boiling fraction are subjected to hydrofomylation comprising above-indicated stages. Bottom fractions obtained in all process stages are processed together in common reaction product separation stage.

EFFECT: increased yield of desired product due to improved technology.

19 cl, 3 dwg, 2 tbl, 6 ex