Diesel oxidation catalyst composite with layer structure for carbon monoxide and hydrocarbon conversion

US8211392B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gerd Grubert · Hannover, DE
• Torsten Neubauer · Langenhagen, DE
• Alfred Punke · Walle, DE
• Torsten W. Müller-Stach · Hannover, DE
• Attilio Siani · Shanghai, CN
• Stanley A. Roth · Yardley, US
• Jeffrey B. Hoke · New Brunswick, US
• Shiang Sung · New York, US
• Yuejin Li · Edison, US
• Xinyi Wei · Princeton, US
• Michel Deeba · East Brunswick Township, US

Key dates

• Filing date: Jan 13, 2010
• Grant date: Jul 3, 2012
• Expiry date: Dec 18, 2030

Classification

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

Abstract

Provided is a catalyst composition, in particular a diesel oxidation catalyst, for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO). More particularly, the present invention is directed to a catalyst structure comprising at least two, specifically three distinct layers, at least one of which contains an oxygen storage component (OSC) that is present in a layer separate from the majority of the platinum group metal (PGM) components, such as palladium and platinum.