Patent · US Active

Transition metal/zeolite SCR catalysts

US8906820B2 · kind B2 · utility

9Cited by

4References

16Claims

0Family size

Assignee

Johnson Matthey Public Limited Company · GB

Inventors

Joseph Michael Fedeyko · Glen Mills, US
Rodney Foo · Nivelles, BE
John Leonello Casci · Redcar, GB
Hai-Ying Chen · Conshohocken, US
Paul Joseph Andersen · Audubon, US
Jillian Elaine Collier · Reading, GB
Raj Rao Rajaram · Slough, GB

Key dates

Filing date	Aug 6, 2012
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Aug 6, 2032

Classification

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

Abstract

A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt.

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