CATALYST SYSTEM FOR REMOVING NITROGEN OXIDE AND METHOD FOR REMOVING NITROGEN OXIDE

Title:

CATALYST SYSTEM FOR REMOVING NITROGEN OXIDE AND METHOD FOR REMOVING NITROGEN OXIDE

Document Type and Number:

WIPO Patent Application WO/2005/082494

Kind Code:

A1

Abstract:

Disclosed is a catalyst system comprising a first reaction unit which is loaded with a first catalyst containing, as active constituents, a composite oxide composed of two or more oxides selected from silica, alumina, titania, zirconia and tungsten oxide, and a rare earth metal or a transition metal (excluding Cu, Co, Ni, Mn, Cr and V), and a second reaction unit which is loaded with a second catalyst containing, as active constituents, a noble metal and a silica-alumina composite oxide.

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Inventors:

MORI TAKAYUKI (JP)
IWAMI NOBUYA (JP)
KUMAGAI TAKAYUKI (JP)
KANAYA ISAMU (JP)
UENO HIROKI (JP)
HIRATA KIMINOBU (JP)

Application Number:

PCT/JP2005/001403

Publication Date:

September 09, 2005

Filing Date:

February 01, 2005

Export Citation:

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Assignee:

TOKYO ROKI KK (JP)
NISSAN DIESEL MOTOR CO (JP)
MORI TAKAYUKI (JP)
IWAMI NOBUYA (JP)
KUMAGAI TAKAYUKI (JP)
KANAYA ISAMU (JP)
UENO HIROKI (JP)
HIRATA KIMINOBU (JP)

International Classes:

B01D53/86; B01D53/94; B01J23/30; B01J23/40; B01J23/42; B01J23/745; B01J23/89; F01N3/08; B01J27/053; B01J35/00; F01N3/10; F01N3/20; F01N3/28; B01J21/12; B01J23/00; B01J37/03; F01N13/02; (IPC1-7): B01D53/94; B01D53/86; B01J23/30; B01J23/42; B01J23/745; B01J23/89; B01J27/053; F01N3/10

Foreign References:

JPH09280012A	1997-10-28
JPH02229547A	1990-09-12
JPS57127426A	1982-08-07
JPH0256250A	1990-02-26
JPS5059282A	1975-05-22
JPS50157258A	1975-12-19
JPS5053296A	1975-05-12
JPS5421956A	1979-02-19

Other References: