Cobalt-catalyzed process for preparing 1, 3-propanediol from ety

Details Cobalt-catalyzed process for preparing 1, 3-propanediol from ety Cobalt-catalyzed process for preparing 1, 3-propanediol from ety

1997-07-15

1999-11-09

Cook, Rebecca

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568454, 568483, C07C 2700

Patent

active

059818085

ABSTRACT:
1,3-Propanediol is prepared in a process which involves reacting ethylene oxide with carbon monoxide and hydrogen in an essentially non-water-miscible solvent in the presence of a non-phosphine-ligated cobalt catalyst and a catalyst promoter to produce an intermediate product mixture containing 3-hydroxypropanal in an amount less than 15 wt %; extracting the 3-hydroxypropanal from the intermediate product mixture into an aqueous liquid at a temperature less than about 100.degree. C. and separating the aqueous phase containing 3-hydroxypropanal from the organic phase containing cobalt catalyst; hydrogenating the 3-hydroxypropanal in the aqueous phase to 1,3-propanediol; and recovering the 1,3-propanediol.
The process enables the production of 1,3-propanediol in high yield and selectivity without the use of a phosphine ligand-modified cobalt catalyst.

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