Title:
EXHAUST GAS PURIFYING CATALYST AND EXHAUST GAS TREATMENT APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/097330
Kind Code:
A1
Abstract:
This catalyst for combusting hydrocarbons in an exhaust gas contains, as a main component, a perovskite composite oxide that is represented by general formula ABO3; the A site contains at least one element that is selected from the group consisting of Ba, Sr and Ca; the B site contains Zr and at least one of Ru and Rh; among the elements in the B site, the molar ratio of Zr is 0.8 or more, while the molar ratio of Ru and/or Rh is 0.005 or more; and the specific surface area is 5.0 m2/g or more.
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Inventors:
TSUJIMOTO SOICHIRO (JP)
SATO HIDETO (JP)
SATO HIDETO (JP)
Application Number:
PCT/JP2021/027281
Publication Date:
May 12, 2022
Filing Date:
July 21, 2021
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
B01D53/94; B01J23/58; B01J23/656; F01N3/10; F01N3/28
Domestic Patent References:
| WO2005058490A1 | 2005-06-30 | |||
| WO2020012687A1 | 2020-01-16 |
Foreign References:
| JP2006347825A | 2006-12-28 | |||
| JPH03131342A | 1991-06-04 | |||
| JPH04193344A | 1992-07-13 | |||
| US20040202598A1 | 2004-10-14 | |||
| US20110150726A1 | 2011-06-23 |
Other References:
GALLUCCI KATIA; VILLA PIERLUIGI; GROPPI GIANPIERO; USBERTI NICOLA; MARRA GIANLUIGI: "Catalytic combustion of methane on BaZr(1−x)MexO3perovskites synthesised by a modified citrate method", CATALYSIS TODAY, ELSEVIER, AMSTERDAM, NL, vol. 197, no. 1, 23 October 2012 (2012-10-23), AMSTERDAM, NL , pages 236 - 242, XP028956642, ISSN: 0920-5861, DOI: 10.1016/j.cattod.2012.08.034
Attorney, Agent or Firm:
NOZUE, Takahiro et al. (JP)
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