Patent · US Active

Catalyst for reducing nitrogen oxides

US9662638B2 · kind B2 · utility

9Cited by

9References

20Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Ruediger Hoyer · Alzenau, DE
Anke Schuler · Niedernberg, DE
Elena Mueller · Pfungstadt, DE
Thomas UTSCHIG · Frankfurt am Main, DE
Gerald Jeske · Neuberg, DE

Key dates

Filing date	Jan 6, 2014
Grant date	May 30, 2017
Priority date	—
Expiry date	Jan 6, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2510/0684
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a nitrogen oxide storage catalyst composed of at least two catalytically active coatings on a support body, wherein a lower coating A contains cerium oxide, and platinum and/or palladium, but no alkaline earth metal compound, and an upper coating B which is disposed above coating A contains an alkaline earth metal compound, a basic mixed magnesium-aluminum oxide, and platinum and palladium, and to a method for converting NOx in exhaust gases of motor vehicles which are operated with lean-burn engines.

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