Process for regenerating spent vanadium oxide containing oxidation catalysts

US4111832A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Klaus Rohbock · Kempen, DE
• Rudolf Wiemers · Meerbusch, DE
• Peter Woditsch · Krefeld, DE
• Reinhard Thiel · Krefeld, DE

Key dates

• Filing date: Nov 22, 1976
• Grant date: Sep 5, 1978
• Expiry date: Nov 22, 1996

Classification

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

Abstract

A process for regenerating a deactivated oxidation catalyst, especially one containing vanadium oxide, wherein the deactivated catalyst is treated with an aqueous solution of ammonia and/or an amine at an elevated temperature so as to dissolve at least a portion of the catalyst and the resultant solution or suspension is treated in a known manner to obtain the reactivated catalyst.