Patent · US Active

Three-way catalyst having a upstream multi-layer catalyst

US8394348B1 · kind B1 · utility

24Cited by

3References

15Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

John G. Nunan · Tulsa, US
Raoul Klingmann · Alzenau, DE
Ryan J. Andersen · Belmont, US
Davion Onuga Clark · Auburn Hills, US
David Moser · Sterling Heights, US

Key dates

Filing date	Oct 31, 2012
Grant date	Mar 12, 2013
Priority date	—
Expiry date	Oct 31, 2032

Classification

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

Abstract

Disclosed herein is a layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides being separated in a front and rear portion is disclosed. Provided is a catalytic material of at least two front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of a ceria-containing oxygen storage component (OSC).

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