05149512 is referenced by 33 patents and cites 5 patents.

The invention describes a catalytic process for destroying NOx from oxygen-containing combustion products wherein methane serves as a reductant. The process comprises contacting the NOx-containing combustion products with a desired amount of methane and oxygen in the presence of a metal-exchanged crystalline zeolite having a silicon to aluminum ratio of greater than or equal to about 2.5 under conditions sufficient to effect conversion to gaseous nitrogen, water and carbon oxides. The zeolites are exchanged with a cation selection from the group consisting of cobalt, nickel, iron, chromium, rhodium and manganese.

Title
Catalytic reduction of NOx using methane in the presence of oxygen
Application Number
7/739273
Publication Number
5149512
Application Date
August 1, 1991
Publication Date
September 22, 1992
Inventor
John N Armor
Orefield
PA, US
Yuejin Li
Allentown
PA, US
Agent
William F Marsh
James C Simmons
Keith D Gourley
Assignee
Air Products and Chemicals
PA, US
IPC
C01B 21/00
B01J 8/00
View Original Source