Patent · US Active

SCR catalyst

US10022704B2 · kind B2 · utility

2Cited by

0References

27Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Stephan Malmberg · Frankfurt, DE
Nicola Soeger · Nidderau, DE
Yvonne Demel · Frankfurt am Main, DE
Gerald Jeske · Neuberg, DE

Key dates

Filing date	Nov 19, 2014
Grant date	Jul 17, 2018
Priority date	—
Expiry date	Dec 5, 2034

Classification

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

Abstract

The invention relates to a catalyst comprising at least two catalytically active layers, A and B, wherein A contains a carrier oxide and components A1 and A2, and B contains a carrier oxide and components B1, B2, and B3, wherein A1, A2, and B1 to B3 are defined as disclosed in claim 1. The proportion of component A1 in layer A is thereby greater than the proportion of component B1 in layer B, wherein the proportion of layer A with respect to the total weight of layers A and B, is greater than the proportion of layer B. The invention further relates to a method for reducing nitrogen oxides in exhaust gases of lean-burn internal combustion engines and to an exhaust gas cleaning system.

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