Patent · US Active

Catalytically coated particle filter and method for producing the same and its use

US7977275B2 · kind B2 · utility

18Cited by

8References

13Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Marcus Pfeifer · Mannheim, DE
Markus Koegel · Brohl, DE
Roger Staab · Camarillo, US
Pascal Adolph · Birstein, DE
Yvonne Demel · Frankfurt am Main, DE
Tobias Kuhl · Hanau, DE
Egbert Lox · Hanau, DE
Thomas Kreuzer · Karben, DE
Frank-Walter Schuetze · Haibach, DE

Key dates

Filing date	Aug 13, 2005
Grant date	Jul 12, 2011
Priority date	—
Expiry date	Dec 24, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention proposes a particulate filter having a catalytic coating which contains two catalysts arranged one behind the other. The first catalyst is located in the gas inlet region of the filter and contains a palladium/platinum catalyst. The second catalyst is arranged downstream of the first catalyst and preferably contains platinum alone as catalytically active component. The combination of these two catalysts provides the coated filter with a good ageing stability and resistance to sulphur poisoning.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.