Catalyst for purifying exhaust gases from internal combustion engines and gas turbines operated at above the stoichiometric ratio

US5120695A · kind A · utility

Assignee

• Degusaa Aktiengesellschaft (Degussa AG) · DE

Inventors

• Stephan Blumrich · Zwingenberg, DE
• Reinhold Brand · Hanau, DE
• Bernd Engler · Hanau, DE
• Wolfgang Honnen · Bruchköbel, DE
• Edgar Koberstein · Alzenau, DE

Key dates

• Filing date: Jul 23, 1990
• Grant date: Jun 9, 1992
• Expiry date: Jul 23, 2010

Classification

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

Abstract

A one-piece catalyst for purifying exhaust gases, particularly from internal combustion engines and gas turbines operated above the stoichiometric ratio. The one-piece honeycomb ceramic or metal carrier has a reduction catalyst on its leading-edge portion and an oxidation catalyst on its trailing-edge portion.