Process for the recovery of rhodium from aqueous solutions containing rhodium complexes

US5206000A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gerhard Diekhaus · Oberhausen, DE
• Harald Kappesser · Oberhausen, DE

Key dates

• Filing date: Dec 20, 1988
• Grant date: Apr 27, 1993
• Expiry date: Dec 20, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the recovery of rhodium from aqueous solutions of complexes thereof wherein the solutions are treated with oxygen in the presence of a water soluble salt of a carboxylic acid and, in a second stage, further treated with a hypochlorite, whereby oil soluble rhodium compounds are formed which can readily be separated from the aqueous solution.