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Title:
NOx STORAGE AND REDUCTION CATALYST, METHOD OF MANUFACTURING THE SAME, AND SYSTEM FOR PURIFYING NOx CONTAINING THE SAME
Document Type and Number:
Japanese Patent JP2012035253
Kind Code:
A
Abstract:

To develop an NOx storage and reduction catalyst having excellent storage and reduction capability of NOx in both cases of before and after degradation and before and after turning to SO2, and having storage and reduction capability of NOx even under a low temperature environment.

The NOx storage and reduction catalyst includes: a carrier containing either an alkali metal or an alkali-earth metal, and alumina; at least one of NOx storage element selected from a group consisting of alkali metals, alkali-earth metals, or rare-earth elements; and at least one novel metal selected from a group consisting of platinum, palladium, ruthenium, silver, gold, and rhodium. It is more preferable for the carrier containing either an alkali metal or an alkali-earth metal, and alumina to contain either lithium or magnesium, and alumina.


Inventors:
NAM IN SIK
PARK SANG JUN
LEE JIN HA
YOUN YOUNG-KEE
Application Number:
JP2010255893A
Publication Date:
February 23, 2012
Filing Date:
November 16, 2010
Export Citation:
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Assignee:
HYUNDAI MOTOR CO LTD
KIA MOTORS CORP
International Classes:
B01J23/58; B01D53/94; B01J32/00; B01J37/02; B01J37/04; B01J37/08; F01N3/08; F01N3/10
Domestic Patent References:
JP2003299961A2003-10-21
JPH0788371A1995-04-04
JPH10249199A1998-09-22
JP2000202289A2000-07-25
JPH0775735A1995-03-20
JP2009226349A2009-10-08
JP2002213232A2002-07-31
JP2001059413A2001-03-06
JP2007530271A2007-11-01
JP2011052680A2011-03-17
Attorney, Agent or Firm:
Kyosei International Patent Office



 
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