CATALYST CARRIER PARTICLE, METHOD FOR PRODUCING THE SAME, AND EXHAUST GAS PURIFYING CATALYST

Title:

CATALYST CARRIER PARTICLE, METHOD FOR PRODUCING THE SAME, AND EXHAUST GAS PURIFYING CATALYST

Document Type and Number:

WIPO Patent Application WO/2008/007628

Kind Code:

A1

Abstract:

Disclosed is a catalyst carrier particle (10) wherein rare earth oxide enriched regions (2) are scattered in the surface of a zirconia metal oxide particle (1). Also disclosed is a method for producing a catalyst carrier particle, which comprises a step (a) for preparing a colloidal solution containing colloidal particles of a hydroxide or oxide of a rare earth element, a step (b) for adding a zirconia metal oxide particle into the colloidal solution and having the colloidal particles adsorbed and loaded on the surface of the zirconia metal oxide particle, and a step (c) for drying and firing the zirconia metal oxide particle on which the colloidal particles are adsorbed and loaded.

Inventors:

TAKESHIMA SHINICHI (JP)
KIYOYAMA RYO (JP)

Application Number:

PCT/JP2007/063626

Publication Date:

January 17, 2008

Filing Date:

July 03, 2007

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
TAKESHIMA SHINICHI (JP)
KIYOYAMA RYO (JP)

International Classes:

B01J23/63; B01D53/94; B01J32/00; B01J37/02

Foreign References:

JP2000262898A	2000-09-26
JP2004275919A	2004-10-07
JP2002518171A	2002-06-25
JP2002282692A	2002-10-02

Other References: