Regeneration of aq cobalt salt soln - used as catalysts in hydroformylation processes

Title process comprising removing iron cpds. contaminating the cobalt salt solns., is improved by treating the soln to be regenerated with an oxidising agent (pref. H2O2 or air) at 70-150 degrees C under a press. of 1-2500 atm, at a pH of 3.5-6.5 (pref. 4.5-6.0). The residual iron content is 5 mg /l...

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Bibliographische Detailangaben
Hauptverfasser:	POREDDA,SIEGFRIED,DR, DAUTE,RALF, SCHMUCK,RUDI,DR, SCHROEDER,LOTHAR,DR, BALTZ,HANS,DR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Title process comprising removing iron cpds. contaminating the cobalt salt solns., is improved by treating the soln to be regenerated with an oxidising agent (pref. H2O2 or air) at 70-150 degrees C under a press. of 1-2500 atm, at a pH of 3.5-6.5 (pref. 4.5-6.0). The residual iron content is 5 mg /l.