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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 9597664 B1

PDFFull Text
Date of Patent:
Mar. 21, 2017

Filed:

Jan. 26, 2012

Lnt and scr catalysts for combined lnt-scr applications

Applicants:

Albert N. Chigapov, Aachen, DE;

Robert Ukropec, Aachen, DE;

Brendan Patrick Carberry, Aachen, DE;

Nina Shishkina, Krasnoyarsk, RU;

Inventors:

Albert N. Chigapov, Aachen, DE;

Robert Ukropec, Aachen, DE;

Brendan Patrick Carberry, Aachen, DE;

Assignee:

Ford Global Technologies, LLC, Dearborn, MI (US);

Attorneys:

Julia Voutyras

John D. Russell

B. Anna McCoy

Primary Examiner:

Patricia L Hailey

Int. Cl.
CPC ...
B01J 29/56 (2006.01); B01J 29/58 (2006.01); B01J 23/63 (2006.01); B01D 53/94 (2006.01); B01J 29/072 (2006.01); B01J 29/076 (2006.01); B01J 35/00 (2006.01); B01J 37/02 (2006.01); F01N 13/00 (2010.01); F01N 3/035 (2006.01); F01N 3/08 (2006.01); F01N 3/10 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
B01J 23/63 (2013.01); B01D 53/9418 (2013.01); B01D 53/9422 (2013.01); B01J 29/072 (2013.01); B01J 29/076 (2013.01); B01J 35/0006 (2013.01); B01J 37/0203 (2013.01); B01J 37/0205 (2013.01); B01J 37/0242 (2013.01); B01J 37/0246 (2013.01); F01N 13/009 (2014.06); B01D 2251/2062 (2013.01); B01D 2251/2067 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2045 (2013.01); B01D 2255/2063 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/20746 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/50 (2013.01); B01D 2255/904 (2013.01); B01D 2255/911 (2013.01); B01J 2229/16 (2013.01); B01J 2229/18 (2013.01); B01J 2229/37 (2013.01); B01J 2523/00 (2013.01); F01N 3/035 (2013.01); F01N 3/0842 (2013.01); F01N 3/106 (2013.01); F01N 3/2066 (2013.01); F01N 2370/02 (2013.01); F01N 2370/04 (2013.01); Y02T 10/24 (2013.01);
Abstract

The current invention refers to the LNT and the SCR catalysts designed for combined LNT-SCR applications. LNT catalysts are based on proton-conducting oxides of fluorite structure, namely Ca (Sr)—La—Ce (Zr, Pr) mixed oxides in which up to 40 mol-% of lanthanum is replaced by calcium and/or strontium, and up to 66 mol-% of cerium is replaced by zirconium and/or praseodymium, further combined with Pt—Pd or Pt—Pd—Rh precious metal components. SCR catalysts are Cu/zeolite modified by citrate treatment or Cu—Ce, Mn—Ce or Co—Ce/modified zeolite.

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