Method for producing an aldehyde

Details Method for producing an aldehyde Method for producing an aldehyde

1994-05-26

1995-06-20

Lone, Werren B.

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

Organic compounds

Oxygen containing

568452, 568453, C07C 4550

Patent

active

054262380

ABSTRACT:
A method for producing an aldehyde, which comprises reacting an olefin with carbon monoxide and hydrogen in a hydroformylation reaction zone in the presence of a rhodium catalyst having an organophosphorus compound as a ligand, wherein a reaction solution withdrawn from the hydroformylation reaction zone, which contains an unreacted olefin, an aldehyde product and the catalyst, is countercurrently contacted with carbon monoxide and hydrogen in a contact tower to separate and recover the unreacted olefin without substantially deactivating the rhodium catalyst and supplying the recovered unreacted olefin together with the carbon monoxide and the hydrogen to the hydroformylation reaction zone.

REFERENCES:
patent: 4523036 (1985-06-01), Cornils et al.
patent: 4567305 (1986-01-01), Matsumoto et al.
patent: 4577043 (1986-03-01), Kalbfell et al.
patent: 4827043 (1989-05-01), Butler
patent: 5105018 (1992-04-01), Miyazawa et al.
J. Chem. Soc. (A), (4) 1968, D. Evans et al., "The Reaction of Hydridocarbonyltris (Triphenylphosphine)Rhodium with Carbon Monoxide, and of the Reaction Products, Hydridodicarbonylbis(Triphenylphosphine)Rhodium and Dimeric Species, with Hydrogen ", pp. 2660-2665.
Indications The International Journal of Davy McKee, (6) 1982/1983, J. L. Stewart, "LP Oxo Process--A Success Story", pp. 20-28.

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