Method for producing aldehydes by hydroformylation in the presence of crown ether
AssigneeCelanese Chemicals Europe GmbH
InventorsSandra Bogdanovic, Klaus Kuhlein
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Abstract
The invention relates to a method for producing aldehydes by reacting one olefine containing 3 to 12 carbon atoms with hydrogen and carbon monoxide in the presence of one rhodium catalyst. The invention is characterized in that (a) the rhodium catalyst is present in an aqueous phase, whereby the aqueous phase contains i) rhodium in an elemental or bonded form, ii) one trisulfonated triaryl phosphine, and iii) one crown etherl (b) the olefine is present in the reaction conditions in a liquid organic phase which cannot be mixed with the aqueous phase.
Claims20
In a process for the production of aldehydes by hydroformylation of olefins of 3 to 12 carbon atoms with hydrogen and carbon monoxide in the presence of a rhodium catalyst, the improvement comprising a) the rhodium catalyst is present in an aqueous phase comprising i) rhodium in elementary or bound form, ii) a trisulfonated triarylphosphine having 1 to 2 phosphorus atoms and iii) a crown ether and b) the olefin under the reaction conditions is present in a liquid organic phase not miscible with the aqueous phase.
Dependencies are inferred from the claim text.