PRODUCTION METHOD FOR FILTER CATALYST

Title:

PRODUCTION METHOD FOR FILTER CATALYST

Document Type and Number:

WIPO Patent Application WO/2005/075051

Kind Code:

A1

Abstract:

A production method for a filter catalyst capable of producing a filter catalyst in which blocking of air holes by a catalyst layer is prevented. The production method for a filter catalyst comprises the step of spreading coating slurry on a catalyst carrier base material, the step of removing excessive coating slurry, and the step of drying/firing the coating slurry, characterized in that excessive coating slurry is removed by repeating the step of holding the axial-direction one end of the catalyst carrier base material and the other end with a pressure difference applied to between them and the step of holding the one end of the base material and the other end under the same pressure. The production method can produce a filter catalyst having a sufficient air permeability ensured and being free from a rise in pressure loss.

Inventors:

TSUJI MAKOTO (JP)
OKI DAISUKE (JP)
SENDA KOJI (JP)

Application Number:

PCT/JP2005/002528

Publication Date:

August 18, 2005

Filing Date:

February 10, 2005

Export Citation:

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Assignee:

CATALER CORP (JP)
TOYOTA MOTOR CO LTD (JP)
TSUJI MAKOTO (JP)
OKI DAISUKE (JP)
SENDA KOJI (JP)

International Classes:

B01D39/14; B01J23/58; F01N3/02; B01J35/04; B01J37/00; B01J37/02; F01N3/10; F01N3/28; B01J35/00; (IPC1-7): B01D39/14; B01J35/04; B01J37/02

Foreign References:

JP2003236392A	2003-08-26
JP2003161137A	2003-06-06
JP2000202307A	2000-07-25
JPH09220423A	1997-08-26
JP2004097958A	2004-04-02
JPH09173866A	1997-07-08
JPH09220423A	1997-08-26
EP0327880A2	1989-08-16
US5165970A	1992-11-24
JP2000202307A	2000-07-25
JP2000202303A	2000-07-25

Other References: