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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.:

US 9266064 B1

PDFFull Text
Date of Patent:
Feb. 23, 2016

Filed:

Aug. 28, 2014

Co slip catalyst and method of using

Applicant:

Johnson Matthey Plc, London, GB;

Inventors:

Erich Conlan Weigert, Morgantown, PA (US);

Shadab Sharif Mulla, Pottstown, PA (US);

Todd Howard Ballinger, Downingtown, PA (US);

Jeffery Scott Rieck, King of Prussia, PA (US);

Julian Peter Cox, Malvern, PA (US);

Hai-Ying Chen, Conshohocken, PA (US);

Assignee:

Johnson Matthey PLC, London, GB;

Attorney:

Kevin Carroll

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01D 53/56 (2006.01); B01D 53/94 (2006.01); B01J 8/02 (2006.01); C01B 21/00 (2006.01); C01B 23/00 (2006.01); C01B 25/00 (2006.01); C01B 31/00 (2006.01); C01B 33/00 (2006.01); C01B 35/00 (2006.01); C01G 28/00 (2006.01); C01G 30/00 (2006.01); B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/10 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/58 (2006.01); B01J 23/60 (2006.01); B01J 21/04 (2006.01); B01J 35/04 (2006.01); B01J 23/63 (2006.01);
U.S. Cl.
CPC ...
B01D 53/9477 (2013.01); B01D 53/944 (2013.01); B01J 23/10 (2013.01); B01J 23/44 (2013.01); B01J 23/63 (2013.01); B01J 35/04 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/407 (2013.01); B01D 2257/502 (2013.01);
Abstract

A CO slip catalyst, for treating an exhaust gas from a lean burn internal combustion engine, is disclosed. The CO slip catalyst comprises palladium and a ceria-containing material. The invention also includes a method for oxidizing excess CO in an exhaust gas, wherein the excess CO results from the periodic contact of an upstream catalyst under rich exhaust conditions. The method comprises contacting the excess CO in the exhaust gas with a CO slip catalyst at a temperature in the range of 100 to 700° C.

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