Process for the recovery of rhodium from residues of the distillation of products of the oxo synthesis

US5264600A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Lappe · Dinslaken, DE
• Helmut Springer · Dinslaken, DE

Key dates

• Filing date: Mar 20, 1992
• Grant date: Nov 23, 1993
• Expiry date: Mar 20, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Recovery of rhodium from the distillation residues from the crude products of oxo synthesis, the residue or the starting material containing the residue is treated with oxygen or an oxygen-containing gas in the presence of a monocarboxylic acid with 2 to 5 carbon atoms and of an alkali metal salt of a monocarboxylic acid with 2 to 5 carbon atoms. The rhodium is subsequently extracted with water as a water-soluble compound.