Patent · US Active

Copper/chabazite-based catalyst with improved catalytic activity for reduction of nitrogen oxides

US8821820B2 · kind B2 · utility

1Cited by

6References

8Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Michael Seyler · Rodenbach, DE
Nicola Soeger · Nidderau, DE
Katja Adelmann · Darmstadt, DE
Thomas R. Pauly · Lansing, US
Gerald Jeske · Neuberg, DE

Key dates

Filing date	Dec 14, 2011
Grant date	Sep 2, 2014
Priority date	—
Expiry date	Dec 14, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2229/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for improving catalytic activity of a copper-promoted zeolitic catalyst with a chabazite structure, the copper-promoted zeolitic catalyst having a temperature-programmed reduction (TPR) signal in a temperature range from 230° C. to 240° C. as examined in a TPR with a test gas having a hydrogen content of 5% by volume, a heating rate of 10 K/min, and a catalyst sample weight containing from 3 to 8 milligrams of copper calculated as metal.

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