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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 10350578 B1

PDFFull Text
Date of Patent:
Jul. 16, 2019

Filed:

Nov. 21, 2014

Composition containing zirconium, cerium and yttrium oxides having a high reducibility, method for preparing same and use thereof in catalysis

Applicant:

Rhodia Operations, Paris, FR;

Inventors:

Olivier Larcher, Perigny, FR;

Emmanuel Rohart, Lyons, FR;

Simon Ifrah, Lagord, FR;

Assignee:

RHODIA OPERATIONS, Aubervilliers, FR;

Attorney:

Osha Liang LLP

Primary Examiner:

Patricia L Hailey

Int. Cl.
CPC ...
B01J 23/10 (2006.01); B01D 53/94 (2006.01); B01J 23/00 (2006.01); B01J 37/03 (2006.01); C01F 17/00 (2006.01); C01G 25/00 (2006.01); C01G 25/02 (2006.01); B01J 35/02 (2006.01); B01J 37/06 (2006.01); B01J 37/08 (2006.01); F01N 3/10 (2006.01);
U.S. Cl.
CPC ...
B01J 23/10 (2013.01); B01D 53/94 (2013.01); B01D 53/945 (2013.01); B01J 23/002 (2013.01); B01J 35/026 (2013.01); B01J 37/03 (2013.01); B01J 37/031 (2013.01); B01J 37/06 (2013.01); B01J 37/08 (2013.01); C01F 17/0018 (2013.01); C01G 25/006 (2013.01); C01G 25/02 (2013.01); B01D 2255/206 (2013.01); B01D 2255/407 (2013.01); B01D 2255/9207 (2013.01); B01J 2523/00 (2013.01); C01P 2002/52 (2013.01); C01P 2006/12 (2013.01); C01P 2006/13 (2013.01); F01N 3/10 (2013.01); Y02A 50/2324 (2018.01); Y02T 10/22 (2013.01);
Abstract

The invention relates to a composition containing zirconium, cerium and yttrium oxides with a cerium oxide proportion of between 3% and 15%, and yttrium oxide proportions corresponding to the following conditions: 6% at most if the cerium oxide proportion is between 12% excluded and 15% included; 10% at most if the cerium oxide proportion is between 7% excluded and 12% included; 30% at most if the cerium oxide proportion is between 3% and 7% included; the balance consisting of zirconium oxide. The composition may optionally include an oxide of a rare earth selected from lanthanum, neodymium and praseodymium. The composition can be used for processing the exhaust gases of a vehicle.

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