Title:
PRODUCTION METHOD FOR EXHAUST GAS PURIFICATION CATALYST AND CHEMICAL SOLUTION PLATE USED IN SAID PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/189172
Kind Code:
A1
Abstract:
The present disclosure provides technology for suppressing waviness of the loading width of a catalyst metal-loaded part in an exhaust gas purification catalyst. The production method disclosed herein comprises: preparing a base material that has an exhaust gas passage; preparing a catalyst metal solution that contains a catalyst metal which functions as a catalyst that can oxidize or reduce at least one type of exhaust gas component; supplying the catalyst metal solution to a chemical solution plate such that the bottom surface of the chemical solution plate is not exposed; immersing an end part of the base material in the catalyst metal solution supplied to the chemical solution plate and introducing the catalyst metal solution into the exhaust gas passage of the base material; and firing the base material in which the catalyst metal solution has been introduced. Formed in the bottom surface of the chemical solution plate is a groove of a prescribed pattern. The average depth of the groove is 1.2-3 mm. The average width of the groove is 1.6-3 mm.
Inventors:
SHIBATA KOKI (JP)
INAMORI KENTA (JP)
INAMORI KENTA (JP)
Application Number:
PCT/JP2023/007816
Publication Date:
October 05, 2023
Filing Date:
March 02, 2023
Export Citation:
Assignee:
CATALER CORP (JP)
International Classes:
B01J37/02; B01J23/44; B01J35/04
Foreign References:
| JP2003334444A | 2003-11-25 | |||
| JP2006021128A | 2006-01-26 | |||
| US20070049491A1 | 2007-03-01 | |||
| JP2001029798A | 2001-02-06 |
Attorney, Agent or Firm:
ABE, Makoto (JP)
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