排ガス処理用触媒および排ガス処理方法

Title:

排ガス処理用触媒および排ガス処理方法

Document Type and Number:

Japanese Patent JP4012456

Kind Code:

B2

Abstract:

To provide a catalyst for treatment of exhaust gas, which consists of a catalytic component-deposited metal oxide and keeps high treatment efficiency stably over a long period of time without increasing the amount of a catalytic component to be deposited specially even when the exhaust gas contains low-concentration CO and the catalytic material cost of which is kept low and to provide a method for treatment of the exhaust gas by using this catalyst.

This catalyst for treatment of an exhaust gas containing low-concentration CO is obtained by using titanium oxide as a carrier and depositing the catalytic component A consisting of at least one noble metal element on the titanium oxide and satisfies at least one of the following conditions (1)-(3); the condition (1): this catalyst has 0.20-0.80 cm3/g total pore volume when measured by a mercury force feed method; the condition (2): this catalyst has ≥20 m2/g specific surface area when measured by a BET method; the condition (3): this catalyst contains, as titanium-based oxide, the titanium-based oxide having an anatase type crystal structure.

Inventors:

Atsushi Morita
Atsushi Okamura
Nobuyuki Masaki
Sugishima Noboru
Kobayashi Motonobu

Application Number:

JP2002332391A

Publication Date:

November 21, 2007

Filing Date:

November 15, 2002

Export Citation:

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Assignee:

Nippon Shokubai Co., Ltd.

International Classes:

B01D53/86; B01J23/42; B01J23/652; B01J35/10

Domestic Patent References:

JP2002502695A
JP8215544A
JP2000288347A
JP10180096A
JP2001518001A
JP10500054A
JP2001046878A
JP8038858A
JP2107340A
JP8052362A
JP1203045A
JP2003210984A
JP2004000880A
JP10028878A

Attorney, Agent or Firm:

Takehiko Matsumoto

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