VERFAHREN ZUR RUECKGEWINNUNG VON RHODIUM

• Main Authors: BEXTEN, LUDGER. DR., 4224 HUENXE, DE, WEBER, JUERGEN. DR., 4200 OBERHAUSEN, DE, LAPPE, PETER. DR., 4220 DINSLAKEN, DE, SPRINGER, HELMUT., 4200 OBERHAUSEN, DE, KUPIES, DIETER, 4100 DUISBURG, DE
• Format: Patent
• Language: German
• Published: 05.04.1990
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; FERROUS OR NON-FERROUS ALLOYS; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The present invention relates to a process for recovering rhodium from aqueous solutions containing rhodium complex compounds and, where appropriate, complex ligands, in the presence of a water-soluble salt of a carboxylic acid, by treatment of the aqueous solution at 20 to 120 DEG C with hydrogen peroxide or a substance forming hydrogen peroxide and with oxygen or an oxygen-containing gas. The rhodium is subsequently separated off as water-insoluble compound.