Method for preventing the contamination by platinum of an SCR catalyst

US9492787B2 · kind B2 · utility

Assignee

• UNICORE AG & CO. KG · DE

Inventors

• Frank-Walter Schuetze · Haibach, DE
• Marcus Pfeifer · Mannheim, DE
• Michael Schiffer · Hanau, DE
• Martin Symalla · Darmstadt, DE
• Christoph Hengst · Rockenberg, DE

Key dates

• Filing date: Jun 10, 2013
• Grant date: Nov 15, 2016
• Expiry date: Jun 15, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for preventing the contamination by platinum of an SCR catalyst in an exhaust-gas treatment system, said system comprising an oxidation catalyst containing platinum on the inflow side of the SCR catalyst. The outflow side of the oxidation catalyst comprises a material zone which removes traces of platinum contained in the exhaust-gas stream.