Method for separating organic transition metal complex catalysts

US8226829B2 · kind B2 · utility

Assignee

• Evonik Oxenc GmbH · DE

Inventors

• Klaus-Diether Wiese · Haltern am See, DE
• Goetz Baumgarten · Neubiberg, DE
• Franz-Felix Kuppinger · Marl, DE
• Oliver Moeller · Recklinghausen, DE
• Dagmara Ortmann · Brig, CH
• Cornelia Borgmann · Frankfurt, DE
• Wilfried Bueschken · Haltern, DE

Key dates

• Filing date: Sep 8, 2006
• Grant date: Jul 24, 2012
• Expiry date: Jan 14, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Process for separating a dissolved complex catalyst of a metal of group 4, 5, 6, 7, 8, 9 or 10 of the Periodic Table of the Elements and/or any free organophosphorus ligand present from a nonaqueous hydroformylation reaction mixture which contains an aldehyde product and an organic solvent at least one membrane which is more permeable to the hydroformylation product than to the organophosphorus ligand, the separation being carried out under a carbon monoxide partial vapor pressure of more than 200 kPa.