Catalytic activated diesel particle filter with ammonia trap effect

US8226896B2 · kind B2 · utility

Assignee

• UMICORE AG & CO. KG · DE

Inventors

• Marcus Pfeifer · Mannheim, DE
• Markus Koegel · Brohl, DE
• Wolfgang Schneider · Marl, DE
• Nicola Soeger · Nidderau, DE
• Katja Adelmann · Darmstadt, DE
• Gerald Jeske · Neuberg, DE
• Thomas Kreuzer · Karben, DE

Key dates

• Filing date: Jan 28, 2008
• Grant date: Jul 24, 2012
• Expiry date: Dec 22, 2028

Classification

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

Abstract

A catalytically active diesel particulate filter with ammonia trap action is presented, which, in addition to an oxidation-active coating (2), comprises a coating (1) which is catalytically active in the SCR reaction. By means of this inventive diesel particulate filter, it is possible to make exhaust gas aftertreatment systems for removing nitrogen oxides and particulates from the exhaust gas of lean engines considerably simpler and less expensive.