Patent · US Active

Nitrogen oxide storage catalytic converter for use in a motor vehicle in a close-coupled position

US8454917B2 · kind B2 · utility

14Cited by

3References

14Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Ruediger Hoyer · Alzenau, DE
Stephan Eckhoff · Alzenau, DE
Thomas R. Pauly · Lansing, US

Key dates

Filing date	Jan 27, 2010
Grant date	Jun 4, 2013
Priority date	—
Expiry date	Mar 4, 2030

Classification

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

Abstract

A nitrogen oxide storage catalyst is provided, which has two catalytically active coatings on a support body. The lower coating applied directly to the support body has a nitrogen oxide storage function and includes platinum as a catalytically active component applied to a homogeneous magnesium-aluminum mixed oxide in combination with a nitrogen oxide storage material, in which a nitrogen oxide storage component is likewise present and applied to a homogeneous magnesium-aluminum mixed oxide. The second layer is notable for three-way catalytic activity, and includes palladium applied to aluminum oxide and barium oxide or strontium oxide, but no platinum.

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