Title:
CATALYST AND METHOD FOR REMOVING NITROGEN OXIDE
Document Type and Number:
Japanese Patent JP3965711
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a high NOx purifying capacity and to enhance heat resistance and poisoning resistance by using a catalyst obtained by supporting alkali metal, Ti and at least one of Rh, Pt and Pd on a porous carrier as active components.
SOLUTION: In a fuel jet type car gasoline engine, exhaust gas is discharged through an exhaust pipe 19 and an exhaust gas purifying catalyst 20. This exhaust gas purifying catalyst 20 purifies nitrogen oxide in combustion exhaust gas in the presence of reductive gases such as carbon monoxide and hydrocarbon in the exhaust gas and is obtained by supporting alkali metal, Ti and at least one of Rh, Pt and Pd on a porous carrier as active components. Or, this catalyst 20 is obtained by supporting at least one of Rh, Pt and Pd, at least one of La and Ce, at least one of Na, Li, K and Rb, Mg and Ti on a porous carrier as active components.
Inventors:
Hidehiro Iizuka
Ryota Doi
Hiroshi Hanaoka
Toshio Ogawa
Osamu Kuroda
Toshio Yamashita
Shigeru Kozuhata
Yuichi Kitahara
Norihiro Shinozuka
Ryota Doi
Hiroshi Hanaoka
Toshio Ogawa
Osamu Kuroda
Toshio Yamashita
Shigeru Kozuhata
Yuichi Kitahara
Norihiro Shinozuka
Application Number:
JP28367296A
Publication Date:
August 29, 2007
Filing Date:
October 25, 1996
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B01D53/56; B01D53/94; B01D53/86; B01J23/10; B01J23/58; B01J23/63; (IPC1-7): B01D53/94; B01D53/56; B01D53/86; B01J23/10; B01J23/58
Domestic Patent References:
| JP7136514A | ||||
| JP6134305A | ||||
| JP8099034A | ||||
| JP10118457A | ||||
| JP10118494A | ||||
| JP9000926A | ||||
| JP9201532A | ||||
| JP6182201A | ||||
| JP3037975B2 |
Attorney, Agent or Firm:
Manabu Inoue
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