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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 12042781 B1

PDFFull Text
Date of Patent:
Jul. 23, 2024

Filed:

Jan. 24, 2023

Surface-modified ceria-zirconia mixed oxide compound for gasoline exhaust

Applicant:

Johnson Matthey Public Limited Company, London, GB;

Inventors:

Qinghe Zheng, Wayne, PA (US);

Jing Lu, Wayne, PA (US);

Michael Howard, Wayne, PA (US);

Andrea Eva Pascui, Reading, GB;

Kerry Simmance, Reading, GB;

Janet Fisher, Reading, GB;

Assignee:

JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London, GB;

Attorney:
Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01J 21/04 (2006.01); B01D 53/94 (2006.01); B01J 21/06 (2006.01); B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/04 (2006.01); B01J 23/10 (2006.01); B01J 23/34 (2006.01); B01J 23/38 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/46 (2006.01); B01J 23/48 (2006.01); B01J 23/54 (2006.01); B01J 23/63 (2006.01); B01J 23/70 (2006.01); B01J 23/76 (2006.01); B01J 23/83 (2006.01); B01J 23/89 (2006.01); B01J 35/04 (2006.01); B01J 35/56 (2024.01); B01J 37/02 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); F01N 3/10 (2006.01); F01N 3/28 (2006.01);
U.S. Cl.
CPC ...
B01J 23/10 (2013.01); B01D 53/945 (2013.01); B01J 23/002 (2013.01); B01J 23/34 (2013.01); B01J 23/44 (2013.01); B01J 23/464 (2013.01); B01J 23/83 (2013.01); B01J 35/56 (2024.01); B01J 37/0213 (2013.01); B01J 37/0221 (2013.01); B01J 37/0236 (2013.01); B01J 37/0248 (2013.01); B01J 37/04 (2013.01); B01J 37/088 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/402 (2013.01); B01D 2255/407 (2013.01); B01D 2255/908 (2013.01); B01D 2255/9155 (2013.01); F01N 3/101 (2013.01); F01N 3/2803 (2013.01); F01N 2370/02 (2013.01);
Abstract

Provided is a composition comprising a ceria-zirconia mixed oxide, the ceria-zirconia mixed oxide being surface-modified with a perovskite type compound of formula (I); wherein formula (I) is defined by AA'BB′O; where: A is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; A′ is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; B is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; B′ is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; x is from 0.7 to 1; y is from 0 to 0.5; and z is from 0 to 0.5.

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