Diesel catalytic converter

US5928981A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Jurgen Leyrer · Rheinfelden (Baden), DE
• Dieter Lindner · Hanau, DE
• Egbert Lox · Hanau, DE
• Thomas Kreuzer · Karben, DE
• Wilfried Muller · Mannenberg, DE
• Rainer Domesle · Alzenau, DE

Key dates

• Filing date: Apr 11, 1997
• Grant date: Jul 27, 1999
• Expiry date: Apr 11, 2017

Classification

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

Abstract

A catalyst for purifying the exhaust gases from diesel engines. The catalyst contains a zeolite mixture of several zeolites with different moduli and platinum group metals as well as further metal oxides from the group aluminum silicate, aluminum oxide and titanium oxide, wherein the aluminum silicate has a ratio by weight of silicon dioxide to aluminum oxide of 0.005 to 1 and the platinum group metals are deposited on only the further metal oxides.