Title:
POROUS STRUCTURE FOR EXHAUST GAS PURIFICATION CATALYST, EXHAUST GAS PURIFICATION CATALYST USING POROUS STRUCTURE, AND EXHAUST GAS PURIFICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/039903
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a porous structure for an exhaust gas purification catalyst, the porous structure having an excellent light-off performance. This porous structure for an exhaust gas purification catalyst includes an oxygen storage component and an inorganic porous body, and the ratio of the volume of a pore having a pore diameter not less than 15 nm but less than 25 nm to the volume of a pore having a pore diameter of not less than 5 nm but less than 15 nm is 1.3-2.5 in a pore volume distribution measured by a mercury penetration porosimeter. Preferably, there is at least one peak-top within the pore diameter range of not less than 15 nm but less than 25 nm.
Inventors:
HOSOI YUSUKE (JP)
IWAKURA HIRONORI (JP)
WAKABAYASHI TAKASHI (JP)
NAKAHARA YUNOSUKE (JP)
IWAKURA HIRONORI (JP)
WAKABAYASHI TAKASHI (JP)
NAKAHARA YUNOSUKE (JP)
Application Number:
PCT/JP2019/030646
Publication Date:
February 27, 2020
Filing Date:
August 05, 2019
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO (JP)
International Classes:
B01J35/10; B01D53/94; B01J23/63; F01N3/28
Domestic Patent References:
| WO2006070540A1 | 2006-07-06 | |||
| WO2018012565A1 | 2018-01-18 | |||
| WO2015037536A1 | 2015-03-19 |
Foreign References:
| JP2017064627A | 2017-04-06 | |||
| JPH11104493A | 1999-04-20 | |||
| US20080167181A1 | 2008-07-10 | |||
| US20140371058A1 | 2014-12-18 | |||
| US20160045896A1 | 2016-02-18 |
Other References:
See also references of EP 3842143A4
Attorney, Agent or Firm:
SHOWA INTERNATIONAL PATENT FIRM (JP)
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