Catalyst for the oxidation of CO and HC at low temperatures

US9757712B2 · kind B2 · utility

Assignee

• UMICORE AG & CO. KG · DE

Inventors

• Ruediger Hoyer · Alzenau, DE
• Fei Wen · Kahl am Main, DE
• Elena Mueller · Pfungstadt, DE

Key dates

• Filing date: Oct 22, 2014
• Grant date: Sep 12, 2017
• Expiry date: Oct 22, 2034

Classification

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

Abstract

The present invention relates to a catalyst for the removal of carbon monoxide and hydrocarbon from the exhaust gas of lean-operated internal combustion engines on a supporting body, which bears platinum and/or palladium on one or more refractory carrier materials and also contains cerium oxide and which, after reductive treatment at 250° C. and after CO adsorption, is characterized by certain peaks in Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), and also relates to the use thereof for removing carbon monoxide and hydrocarbon from the exhaust gas of lean-operated internal combustion engines.