Instant, chemical-free dechlorination of water supplies

US5603844A · kind A · utility

Assignee

• The United States of America, as represented by The Secretary of The Interior · US

Inventors

• Andrew Murphy · Littleton, US
• Lisa H. Rowley · Evergreen, US

Key dates

• Filing date: Jun 6, 1995
• Grant date: Feb 18, 1997
• Expiry date: Jun 6, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2303/185
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Chemical-free autodecomposition of chlorine species to chloride ion and oxygen gas by contacting a chlorine containing liquid solution with a decomposition catalyst consisting of transition metals and their compounds in association with a high surface area per mass. The catalyst comprises Raney metals selected from the group including Raney Cu, Raney Ni, and Raney Co, and aluminum doped with transition metals selected from the group including vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc.