EXHAUST GAS PURIFYING CATALYST, METHOD FOR RECOVERING EXHAUST GAS PURIFYING CATALYST, AND CATALYST SYSTEM FOR EXHAUST GAS PURIFICATION

Title:

EXHAUST GAS PURIFYING CATALYST, METHOD FOR RECOVERING EXHAUST GAS PURIFYING CATALYST, AND CATALYST SYSTEM FOR EXHAUST GAS PURIFICATION

Document Type and Number:

WIPO Patent Application WO/2007/123205

Kind Code:

A1

Abstract:

Disclosed is an exhaust gas purifying catalyst wherein the catalytic activity can be recovered over a wide temperature range. Also disclosed are a method for recovering an exhaust gas purifying catalyst, and a catalyst system for exhaust gas purification. Specifically disclosed is an exhaust gas purifying catalyst characterized by containing an oxide A containing an oxide (A-1) containing an alkaline earth metal and/or a rare earth metal and an inorganic oxide (A-2), and a noble metal B supported by the oxide A. This exhaust gas purifying catalyst is also characterized in that the weight ratio between the oxide (A-1) containing an alkaline earth metal and/or a rare earth metal and the noble metal B is from 1:10 to 1:500.

Inventors:

AONO NORIHIKO (JP)
YAMASHITA YOSHINORI (JP)

Application Number:

PCT/JP2007/058638

Publication Date:

November 01, 2007

Filing Date:

April 20, 2007

Export Citation:

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Assignee:

CATALER CORP (JP)
AONO NORIHIKO (JP)
YAMASHITA YOSHINORI (JP)

International Classes:

B01J23/63; B01D53/86; B01D53/94; B01J23/42; B01J23/96; B01J38/04

Foreign References:

JP2006043637A	2006-02-16
JP2003311152A	2003-11-05
JP2002336700A	2002-11-26
JP2002166170A	2002-06-11
JP2002126453A	2002-05-08
JP2002115534A	2002-04-19
JP2001310131A	2001-11-06
JP2000061268A	2000-02-29
JPH11226404A	1999-08-24
JPH08144748A	1996-06-04

Other References: