Absorption reduction-type NOx purifying catalyst

Details Absorption reduction-type NOx purifying catalyst Absorption reduction-type NOx purifying catalyst

2005-06-14

2005-06-14

Nguyen, Cam N. (Department: 1754)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S066000, C502S074000, C502S261000, C502S262000, C502S263000, C502S302000, C502S303000, C502S304000, C502S308000, C502S309000, C502S313000, C502S328000, C502S332000, C502S333000, C502S334000, C502S339000, C502S341000, C502S349000, C502S350000, C502S351000, C502S355000, C502S407000, C502S415000, C502S439000

Reexamination Certificate

active

06906002

ABSTRACT:
A catalyst able to overcome defects of an absorption reduction-type NOxpurifying catalyst, such as poor NOxpurifying capability at low temperatures and low SOxdesorbing property, is provided.The catalyst is an absorption reduction-type NOxpurifying catalyst where NOxabsorbent particles and support particles having supported thereon a catalyst component are mixed. Preferably, acidic support particles are added to the support particle, the NOxabsorbent particles are a metal oxide having a base point, and the metal oxide is rare earth-added zirconia. In conventional catalysts, the NOxabsorbent such as alkali metal having strong basicity exposes the catalyst component present together on the same support to the basic condition to decrease the catalytic performance. However, in the present invention, the NOxabsorbent and the support are separate particles, whereby the catalyst component can exert its original catalytic performance and, as a result, the NOxpurifying capability at low temperatures and the SOxdesorbing property are improved.

REFERENCES:
patent: 5212142 (1993-05-01), Dettling
patent: 5677258 (1997-10-01), Kurokawa et al.
patent: 5681788 (1997-10-01), Kanesaka et al.
patent: 5989507 (1999-11-01), Sung et al.
patent: 5990038 (1999-11-01), Suga et al.
patent: 6047544 (2000-04-01), Yamamoto et al.
patent: 6093378 (2000-07-01), Deeba et al.
patent: 6221804 (2001-04-01), Yamada et al.
patent: 6228799 (2001-05-01), Aubert et al.
patent: 6326329 (2001-12-01), Nunan
patent: 6413483 (2002-07-01), Brisley et al.
patent: 6420306 (2002-07-01), Kurokawa et al.
patent: 6432859 (2002-08-01), Iwakuni et al.
patent: 6503862 (2003-01-01), Yamamoto
patent: 6518213 (2003-02-01), Yamamoto et al.
patent: 6555081 (2003-04-01), Hori et al.
patent: 0 968 763 (2000-01-01), None
patent: 0 982 066 (2000-03-01), None
patent: 0 988 890 (2000-03-01), None
patent: 0 988 890 (2000-03-01), None
patent: 1 013 334 (2000-06-01), None
patent: 1 036 591 (2000-09-01), None
patent: 1 052 008 (2000-11-01), None
patent: 1 053 779 (2000-11-01), None
patent: A 7-51544 (1995-02-01), None
patent: A 7-136514 (1995-05-01), None
patent: A 8-131838 (1996-05-01), None
patent: A 9-24247 (1997-01-01), None
patent: A 10-290931 (1998-11-01), None
patent: A 11-114422 (1999-04-01), None
patent: A 11-123331 (1999-05-01), None
patent: 11 151439 (1999-06-01), None
patent: 11 226404 (1999-08-01), None
patent: A 2000-202243 (2000-07-01), None
patent: WO 99/29417 (1999-06-01), None

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