METHOD FOR FORMING CATALYST SUPPORTING LAYER AND CATALYST LAYER IN WALL FLOW TYPE FILTER

Title:

METHOD FOR FORMING CATALYST SUPPORTING LAYER AND CATALYST LAYER IN WALL FLOW TYPE FILTER

Document Type and Number:

Japanese Patent JP2001149794

Kind Code:

A

Abstract:

To provide an industrially advantageous method for forming a catalyst supporting layer and a catalyst layer uniformly inside the partition wall of a wall flow type filter without deviation in the distribution of coating components even after drying.

The inside of the partition wall of the wall flow type filter is impregnated with a catalyst supporting liquid, which filter is then dried and sintered to form the catalyst supporting layer and the catalyst layer thereon. For drying, a vacuum drying method is adopted.

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Inventors:

UCHISAWA JIYUNKO
KOBUCHI TAMOTSU
NANBA TETSUYA
KUSHIYAMA AKIRA

Application Number:

JP34055299A

Publication Date:

June 05, 2001

Filing Date:

November 30, 1999

Export Citation:

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Assignee:

NAT INST OF ADVANCED IND SCIEN

International Classes:

B01J23/42; B01J35/04; B01J37/02; B01J37/08; B01D53/86; (IPC1-7): B01J37/08; B01D53/86; B01J23/42; B01J35/04; B01J37/02

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