The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2013
Filed:
Dec. 02, 2011
Todd Howard Ballinger, Downingtown, PA (US);
Philip Gerald Blakeman, Cambridge, GB;
Guy Richard Chandler, Cambridge, GB;
Hai-ying Chen, Conshohocken, PA (US);
Julian Peter Cox, Malvern, PA (US);
Joseph M. Fedeyko, Glen Mills, PA (US);
Alexander Nicholas Michael Green, Baldock, GB;
Paul Richard Phillips, Royston, GB;
Stuart David Reid, Cambourne, GB;
Erich C. Weigert, Newtown Square, PA (US);
James Alexander Wylie, Royston, GB;
Todd Howard Ballinger, Downingtown, PA (US);
Philip Gerald Blakeman, Cambridge, GB;
Guy Richard Chandler, Cambridge, GB;
Hai-Ying Chen, Conshohocken, PA (US);
Julian Peter Cox, Malvern, PA (US);
Joseph M. Fedeyko, Glen Mills, PA (US);
Alexander Nicholas Michael Green, Baldock, GB;
Paul Richard Phillips, Royston, GB;
Stuart David Reid, Cambourne, GB;
Erich C. Weigert, Newtown Square, PA (US);
James Alexander Wylie, Royston, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
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 said zeolite material as free and/or exchanged metal, wherein the extra-framework promoter metal is copper, iron, and mixtures thereof, and is present in a promoter metal-to-aluminum atomic ratio (M:Al) of about 0.10 to about 0.24 based on the framework aluminum; and optionally comprising (c) at least about 1 weight percent of cerium in said zeolite material, based on the total weight of the zeolite, wherein said cerium is present in a form selected from exchanged cerium ions, monomeric ceria, oligomeric ceria, and combinations thereof, provided that said oligomeric ceria has a particle size of less than 5 μm.