Title:
HONEYCOMB FILTER AND METHOD FOR MANUFACTURING HONEYCOMB FILTER
Document Type and Number:
WIPO Patent Application WO/2021/044874
Kind Code:
A1
Abstract:
The present invention pertains to a honeycomb filter comprising a honeycomb fired body provided with: porous cell partition walls that form, by segmentation, a plurality of cells serving as flow passages for exhaust gas; exhaust gas introduction cells each having an end part on the exhaust gas inlet side open and an end part on the exhaust gas outlet side plugged; and exhaust gas discharge cells each having an end part on the exhaust gas outlet side open and an end part on the exhaust gas inlet side plugged. The honeycomb filter is characterized in that the honeycomb fired body contains ceria-zirconia composite oxide particles and alumina particles, the average particle diameter of the ceria-zirconia composite oxide particles measured by a SEM is 5-30 µm, and the average particle diameter of the alumina particles measured by the SEM is 10-30 µm.
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Inventors:
IGARASHI HIROKAZU (JP)
Application Number:
PCT/JP2020/031601
Publication Date:
March 11, 2021
Filing Date:
August 21, 2020
Export Citation:
Assignee:
IBIDEN CO LTD (JP)
International Classes:
B01D39/20; B01D53/94; B01J35/04; B01J35/10; B28B3/20; F01N3/022
Domestic Patent References:
| WO2018164069A1 | 2018-09-13 |
Foreign References:
| JP2017115786A | 2017-06-29 | |||
| JP2011506237A | 2011-03-03 | |||
| JPH1129360A | 1999-02-02 | |||
| JPH01194916A | 1989-08-04 |
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
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