Exhaust gas catalyst

US6180075A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Dieter Lindner · Hanau, DE
• Lothar Mussmann · Offenbach, DE
• Renee Van Yperen · Wertingen, DE
• Thomas Kreuzer · Karben, DE
• Egbert Lox · Hanau, DE

Key dates

• Filing date: Apr 8, 1998
• Grant date: Jan 30, 2001
• Expiry date: Apr 8, 2018

Classification

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

Abstract

A single-layered three-way catalytic converter containing palladium as the only catalytically active noble metal, with high activity and heat resistance. The catalyst contains, in addition to finely divided, stabilized aluminum oxide, at least one finely divided cerium/zirconium mixed oxide and optionally finely divided nickel oxide as well as highly dispersed amounts of cerium oxide, zirconium oxide and barium oxide. The palladium is distributed largely uniformly throughout the entire catalyst.