Method for the production of aldehydes

US8173847B2 · kind B2 · utility

Assignee

• OXEA GMBH · DE

Inventors

• Andreas Fischbach · Eppelheim, DE
• Klaus Schmid · Riedlingen, DE
• Christoph Balzarek · Krefeld, DE
• Wolfgang Dukat · Oberhausen, DE
• Sandra Fürmeier · Weißwasser/O.L. - Běła Woda, DE
• Rainer Lukas · Essen, DE
• Horst Scholz · Warstein, DE
• Edgar Storm · Oberhausen, DE

Key dates

• Filing date: Oct 28, 2008
• Grant date: May 8, 2012
• Expiry date: Mar 27, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Aldehydes are produced by unmodified rhodium catalyzed hydroformylation process in a homogeneous organic phase using a solution of unmodified rhodium catalyst and an organic acid in a total amount, calculated as acid equivalent, of from greater than 3 moles to 3000 moles of acid per mole of rhodium. The organic acid is selected from: saturated aliphatic monocarboxylic acids having from 5 to 13 carbon atoms in the molecule; saturated aliphatic dicarboxylic acids having from 5 to 13 carbon atoms in the molecule; sulphonic acids having from 1 to 12 carbon atoms in the molecule; and combinations thereof. Use of the process can lead to either a significant increase in conversion without reducing selectivity for the desired aldehyde or a reduction in the specific use of rhodium.