Patent · US Active

Catalytically active particulate filter and use thereof

US8932546B2 · kind B2 · utility

2Cited by

17References

13Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Stéphanie Frantz · Soest, DE
Ulrich Goebel · Hattersheim, DE
Franz Dornhaus · Scheinfeld, DE
Michael Schiffer · Hanau, DE

Key dates

Filing date	Jan 29, 2013
Grant date	Jan 13, 2015
Priority date	—
Expiry date	Jan 29, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S502/52713
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A catalytically active particulate filter is proposed which is suitable for use in an exhaust gas cleaning system for diesel engines. The particulate filter removes diesel soot particles from the exhaust gas and is also effective to oxidize carbon monoxide and hydrocarbons and to convert nitrogen monoxide at least proportionally into nitrogen dioxide. The particulate filter comprises a filter body (3) and two catalytically active coatings (1) and (2) which contain platinum and palladium, or platinum or palladium respectively, wherein the platinum content of the second catalytically active coating (2) is higher than the platinum content of the first catalytically active coating (1).

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