EXHAUST GAS TREATMENT CATALYST, EXHAUST GAS TREATMENT METHOD AND EXHAUST GAS TREATMENT DEVICE

Title:

EXHAUST GAS TREATMENT CATALYST, EXHAUST GAS TREATMENT METHOD AND EXHAUST GAS TREATMENT DEVICE

Document Type and Number:

Japanese Patent JP2007083161

Kind Code:

A

Abstract:

To provide an exhaust gas treatment catalyst capable of further efficiently reducing SO3 or NOx contained in an exhaust gas.

The exhaust gas treatment catalyst for removing nitrogen oxide and sulfur trioxide contained in the exhaust gas comprise at least one kind of an independent oxide of titania and silica or a composite oxide of both of titania and silica. A carrier having gold supported thereon is applied to the surface of a base material not only to suppress the decomposition reaction of ammonia caused by gold but also to accelerate the reduction reaction of sulfur trioxide in sulfur oxide in the exhaust gas and the reduction reaction of nitrogen oxide in the exhaust gas to further reduce the concentration of sulfur trioxide and the concentration of nitrogen oxide.

Inventors:

OBAYASHI YOSHIAKI

Application Number:

JP2005274930A

Publication Date:

April 05, 2007

Filing Date:

September 22, 2005

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD

International Classes:

B01J23/68; B01D53/86; B01D53/94; F01N3/08; F01N3/10; F01N3/20; F01N3/24

Domestic Patent References:

JP2001286734A	2001-10-16
JP2000024500A	2000-01-25
JP2001314766A	2001-11-13
JPH03258316A	1991-11-18
JPH0796187A	1995-04-11
JP2000084359A	2000-03-28
JPH11267459A	1999-10-05

Foreign References:

WO1992019366A1

1992-11-12

Attorney, Agent or Firm:

Toshiro Mitsuishi
Tadahiro Mitsuishi
Yasuyuki Tanaka
Hiroshi Matsumoto

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