Oxidation catalyst

US8263032B2 · kind B2 · utility

Assignee

• Johnson Matthey Public Limited Company · GB

Inventors

• Paul Joseph Andersen · Audubon, US
• Todd Howard Ballinger · Audubon, US
• David Bergeal · Ware, GB
• Hsiao-Lan Chang · Wayne, US
• Hai-Ying Chen · Conshohocken, US
• Julian Peter Cox · Wayne, US
• Ralf Dotzel · Burgkunstadt, DE
• Rainer Leppelt · Lichtenfels, DE
• Jörg Werner Münch · Lichtenfels, DE
• Hubert Schedel
• Duncan John William Winterborn · Cambridge, GB

Key dates

• Filing date: Feb 1, 2011
• Grant date: Sep 11, 2012
• Expiry date: Feb 1, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49345
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An oxidation catalyst comprises an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) a majority of the at least one precious metal is located at a surface of the extruded solid body; (ii) the at least one precious metal is carried in one or more coating layer(s) on a surface; (iii) at least one metal is present throughout the extruded solid body and in a higher concentration at a surface; (iv) at least one metal is present throughout the extruded solid body and in a coating layer(s) on a surface; or (v) a combination of (ii) and (iii).