Catalyst for the synthesis of chlorine dioxide

US5435984A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Francis P. Daly · Delaware, US
• John M. Deuber · Nutley, US
• Daniel Ostgard · Kleinostheim, DE

Key dates

• Filing date: Jan 26, 1993
• Grant date: Jul 25, 1995
• Expiry date: Jan 26, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B11/024
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Chlorine dioxide is generated from an aqueous solution of sodium chlorite in the presence of a catalyst having a higher activity and a reduced rate of deactivation. The catalyst is preferably a Pd/Al.sub.2 O.sub.3 of palladium and another platinum group metal (e.g., Pd+Pt/Al.sub.2 O.sub.3) or palladium and a Group IB metal (e.g., Pd+Au/Al.sub.2 O.sub.3) catalyst containing La.sub.2 O.sub.3 and Nd.sub.2 O.sub.3.