Process for preparing aldehydes in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst
AssigneeCelanese Corporation
InventorsSandra Bogdanovic, Carl-Dieter Frohning, Helmut Bahrmann
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Abstract
The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170° C. and a pressure of between 1 and 300 bar an olefinically unsaturated C6-C16 compound in the presence aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 10 and 70 wt % of a compound of formula (1), R(OCH2CH2)nOR1, R standing for hydrogen, a straight-chain or branched C1-C4 alkyl group or a C1-C4 hydroxyalkyl group, R1 standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.
Claims38
A process for preparing aldehydes, which comprises reacting an olefinically unsaturated compound having from 6 to 16 carbon atoms with hydrogen and carbon monoxide at from 20 to 170° C. and from 1 to 300 bar in the presence of an aqueous phase comprising rhodium and sulfonated triarylphosphines as catalyst and from 10 to 70% by weight of a compound of the formula (1) R(OCH2CH2)nOR1, where, in the formula (1), R is hydrogen, a straight-chain or branched alkyl radical having from 1 to 4 carbon atoms or a hydroxyalkyl radical having from 1 to 4 carbon atoms, R1 is hydrogen or a methyl radical and n is an integer from 3 to 50.
Dependencies are inferred from the claim text.