Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function

US9533295B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Torsten W. Müller-Stach · Hannover, DE
• Alfred Punke · Walle, DE
• Gerd Grubert · Hannover, DE
• Marcus Hilgendorff · Hannover, DE
• Helke Doering · Aurich, DE
• Torsten Neubauer · Langenhagen, DE
• Xiaolai Zheng · Princeton Junction, US
• Chung-Zong Wan · Somerville, US
• Wen-Mei Xue
• Patrick Burk · Freehold, US

Key dates

• Filing date: Apr 5, 2012
• Grant date: Jan 3, 2017
• Expiry date: Apr 24, 2032

Classification

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

Abstract

A diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx) is described. More particularly, the present invention is directed to a washcoat composition comprising high silica to alumina zeolite and platinum and palladium such that the zeolite minimizes negative interactions of these platinum group metals with the zeolite.