Catalyst and process for its preparation

US4910180A · kind A · utility

Assignee

• Doduco GmbH · DE

Inventors

• Malte Berndt · Lübeck, DE
• Dieter Ksinsik · Sinsheim, DE

Key dates

• Filing date: Oct 17, 1988
• Grant date: Mar 20, 1990
• Expiry date: Oct 17, 2008

Classification

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

Abstract

A process for the preparation of catalysts, in particular for the purification of exhaust gases from internal combustion engines, is described, which makes it possible to use supports stable up to at least 1,200.degree. C. which are free of gamma-aluminium oxide and transition aluminium oxide and nevertheless have a high catalytic activity. The catalytically active noble metal as the constituent of a composite powder is attached to the support, which in addition to the noble metal contains a thermally stable metal oxide and is prepared by the spray pyrolysis process.