1
Paul Joseph Andersen, Jillian Elaine Bailie, John Leonello Casci, Hai Ying Chen, Joseph Michael Fedeyko, Rodney Kok Shin Foo, Raj Rao Rajaram: Transition metal/zeolite SCR catalysts. Jimmie D Johnson Jr, December 10, 2013: US08603432 (13 worldwide citation)

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 tetrahed ...


2
Paul Richard Phillips, Guy Richard Chandler, Keith Anthony Flanagan: Zoned catalytic filters for treatment of exhaust gas. Johnson Matthey Public Company, Jimmie D Johnson Jr, July 29, 2014: US08789356 (10 worldwide citation)

Provided is an SCRF article having different SCR catalysts compositions disposed on a wall-flow filter substrate in zones that are arranged in series with respect to the inlet and outlet faces of the substrate. Also provided is method of reducing backpressure and ammonia slip that involves the use o ...


3
Louise Clare Arnold, Robert James Brisley, Christopher Gough Morgan: Method and system using a filter for treating exhaust gas having particulate matter. Johnson Matthey Public Company, Jimmie D Johnson Jr, August 20, 2013: US08512657 (7 worldwide citation)

A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine or a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porou ...


4
Louise Arnold, Robert Brisley, Guy Richard Chandler, Andrew Francis Chiffey, Keith Anthony Flanagan, David Greenwell, Christopher Morgan: Filter for filtering particulate matter from exhaust gas emitted from a compression ignition engine. Johnson Matthey Public Company, RatnerPrestia, Jimmie D Johnson Jr, December 17, 2013: US08608820 (7 worldwide citation)

A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores o ...


5
Louise Clare Arnold, Robert James Brisley, Christopher Gough Morgan: Method and system using a filter for treating exhaust gas having particulate matter. Johnson Matthey Public Company, Jimmie D Johnson Jr, December 30, 2014: US08919110 (6 worldwide citation)

A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine or a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porou ...


6
Joseph Michael Fedeyko, Rodney Kok Shin Foo, John Leonello Casci, Hai Ying Chen, Paul Joseph Andersen, Jillian Elaine Collier, Raj Rao Rajaram: Transition metal/zeolite SCR catalysts. Johnson Matthey Public Company, Jimmie D Johnson Jr, December 9, 2014: US08906820 (6 worldwide citation)

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 tetrahed ...


7
Paul Joseph Andersen, Hai Ying Chen, Joseph Michael Fedeyko, Erich Weigert: Small pore molecular sieve supported copper catalysts durable against lean/rich aging for the reduction of nitrogen oxides. Johnson Matthey Public Company, Jimmie D Johnson Jr, January 8, 2013: US08347614 (5 worldwide citation)

A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducin ...


8
Todd Howard Ballinger, Philip Gerald Blakeman, Guy Richard Chandler, Hai Ying Chen, Julian Peter Cox, Joseph M Fedeyko, Alexander Nicholas Michael Green, Paul Richard Phillips, Stuart David Reid, Erich C Weigert, James Alexander Wylie: Zeolite catalyst containing metal. Johnson Matthey Public Company, Jimmie D Johnson Jr, September 17, 2013: US08535629 (4 worldwide citation)

Provided is a catalyst comprising (a) a zeolite material having a mean crystal size of at least about 0.5 μm, having a CHA framework that contains silicon and aluminum, and having a silica-to-alumina mole ratio (SAR) of about 10 to about 25; and (b) an extra-framework promoter metal (M) disposed in ...


9
Todd Howard Ballinger, Philip Gerald Blakeman, Guy Richard Chandler, Hai Ying Chen, Julian Peter Cox, Joseph M Fedeyko, Alexander Nicholas Michael Green, Paul Richard Phillips, Stuart David Reid, Erich Conlan Weigert, James Alexander Wylie: Zeolite catalyst containing metal. Johnson Matthey Public Company, Jimmie D Johnson Jr, December 9, 2014: US08906329 (4 worldwide citation)

A catalyst composition is provided having a zeolite material of a CHA crystal structure and a silica to alumina mole ratio (SAR) of about 10 to about 25 and preferably having a mean crystal size of at least 1.0 microns; and a non-aluminum base metal (M), wherein said zeolite material contains said b ...


10
Joseph M Fedeyko, Hai Ying Chen, Guy Richard Chandler, Alexander Nicholas Michael Green, Debnath De, Shadab Mulla, Wendy Manning, Philip Gerald Blakeman: Catalyst blends. Johnson Matthey Public Company, Jimmie D Johnson Jr, September 8, 2015: US09126180 (3 worldwide citation)

Provided is a catalyst for selective catalytic reduction of NOx in a lean-burn exhaust gas comprising a 0.8:1.0 to 1.2:1.0 blend of a metal promoted aluminosilicate having a CHA structure and a metal promoted silicoaluminophosphate having a CHA structure, respectively, wherein the silicoaluminophosp ...