Process for preparing aldehydes in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst

US6274774A · kind A · utility

Assignee

• Celanese GmbH · US

Inventors

• Sandra Bogdanovic · Frankfurt am Main, DE
• Carl D. Frohning · Wesel, DE
• Helmut Bahrmann · Hamminkeln, DE

Key dates

• Filing date: Aug 30, 1999
• Grant date: Aug 14, 2001
• Expiry date: Aug 30, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2540/32
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170.degree. C. and a pressure of between 1 and 300 bar an olefinically unsaturated C.sub.6 -C.sub.16 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(OCH.sub.2 CH.sub.2).sub.n OR.sup.1, R standing for hydrogen, a straight-chain or branched C.sub.1 -C.sub.4 alkyl group or a C.sub.1 -C.sub.4 hydroxyalkyl group, R.sup.1 standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.