Patent · US Active

Transition metal/zeolite SCR catalysts

US11478748B2 · kind B2 · utility

0Cited by

101References

6Claims

0Family size

Assignee

Johnson Matthey Public Limited Company · GB

Inventors

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

Key dates

Filing date	May 29, 2018
Grant date	Oct 25, 2022
Priority date	—
Expiry date	May 29, 2038

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.