Title:
METHOD FOR MANUFACTURING EXHAUST GAS PURIFICATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2023/167128
Kind Code:
A1
Abstract:
The present disclosure provides a method for manufacturing an exhaust gas purification catalyst having a catalyst layer that is highly uniform with respect to a thickness direction of a separating wall. The disclosed method for manufacturing an exhaust gas purification catalyst includes: preparing a base material 10 which has a wall-flow structure and which comprises a first cell having only an end portion on one side open, a second cell having only an end portion on the other side open, and a porous separating wall dividing the first cell and the second cell; supplying a catalyst layer forming material to the end portion of the base material 10 at which the first cell is open, and coating an interior of the separating wall with the catalyst layer forming material, to a predetermined length from the end portion of the base material at which the first cell is open, in an extension direction of the separating wall, so as to form a portion not coated by the catalyst layer forming material, on the end portion side at which the second cell is open, in the extension direction of the separating wall, of a zone of the separating wall facing the first cell; and drying the coated catalyst layer forming material by causing air to flow from the end portion of the base material at which the second cell is open.
Inventors:
YAMAMOTO KEITA (JP)
MATSUI SUGURU (JP)
OHARA ETSUKO (JP)
MATSUI SUGURU (JP)
OHARA ETSUKO (JP)
Application Number:
PCT/JP2023/007009
Publication Date:
September 07, 2023
Filing Date:
February 27, 2023
Export Citation:
Assignee:
CATALER CORP (JP)
International Classes:
B01J35/04; B01D53/94; B01J23/46; B01J37/02; F01N3/022; F01N3/035; F01N3/10; F01N3/24; F01N3/28
Domestic Patent References:
| WO2019221216A1 | 2019-11-21 |
Foreign References:
| JP2008253961A | 2008-10-23 | |||
| JP2021171676A | 2021-11-01 | |||
| JP2021004579A | 2021-01-14 | |||
| JP2019198838A | 2019-11-21 |
Attorney, Agent or Firm:
ABE, Makoto (JP)
Download PDF:
Previous Patent: INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND INFORMATION PROCESSING PROGRAM
Next Patent: QUBIT CONTROL CIRCUIT
Next Patent: QUBIT CONTROL CIRCUIT