Recovery of rhodium from carbonylation residues using immiscible liquids

Heavy residues produced by noble metal catalyzed carbonylation reactions and containing rhodium, are treated with a mixture of immiscible liquids to precipitate solids containing substantially all of the rhodium contained in the residues. The solids may be returned directly for reuse in the carbonyl...

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Bibliographische Detailangaben
1. Verfasser:	PUGACH, JOSEPH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS 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 ORGANIC CHEMISTRY 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
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Beschreibung
Zusammenfassung:	Heavy residues produced by noble metal catalyzed carbonylation reactions and containing rhodium, are treated with a mixture of immiscible liquids to precipitate solids containing substantially all of the rhodium contained in the residues. The solids may be returned directly for reuse in the carbonylation reaction. One group of liquids consists of water with immiscible alcohols or hydrocarbons, or mixtures thereof. A second group consists of acetic anhydride with immiscible hydrocarbons.