Title:
希土類マンガン／セリウム－ジルコニウムベースの複合化合物、その調製方法および用途
Document Type and Number:
Japanese Patent JP7346578
Kind Code:
B2
Abstract:
The present invention discloses a rare-earth-manganese/cerium-zirconium-based composite compound, a method for preparing the same, and a use thereof. The composite compound is of a core-shell structure with a general formula expressed as: A REcBaOb-(1-A)CexZr(1-x-y)MyO2-z, wherein 0.1≤A≤0.3, preferably 0.1≤A≤0.2; a shell layer has a main component of rare-earth manganese oxide with a general formula of REcMnaOb, wherein RE is a rare-earth element or a combination of more than one rare-earth elements, and B is Mn or a combination of Mn and a transition metal element, 1≤a≤8, 2≤b≤18, and 0.25≤c≤4; and a core has a main component of cerium-zirconium composite oxide with a general formula of CexZr(1-x-y)MyO2-z, wherein M is one or more non-cerium rare-earth elements, 0.1≤x≤0.9, 0≤y≤0.3, and 0.01≤z≤0.3. The composite compound enhances an oxygen storage capacity of a cerium-zirconium material through an interface effect, thereby increasing a conversion rate of a nitrogen oxide.
Inventors:
Huang Koe
Zhang Yong
Lee Hong-e
▲ざい▼ 志哲
Strong
Jang Hyuk
Choi Umeo
Hou Eikyu
Wang Hao
Sodama
Zhang Yong
Lee Hong-e
▲ざい▼ 志哲
Strong
Jang Hyuk
Choi Umeo
Hou Eikyu
Wang Hao
Sodama
Application Number:
JP2021538818A
Publication Date:
September 19, 2023
Filing Date:
September 04, 2020
Export Citation:
Assignee:
GRIREM HI-TECH CO., LTD.
International Classes:
B01J23/34; B01D53/94; B01J23/889; B01J37/03; B01J37/04; B01J37/06; B01J37/08; B01J37/12; C01G25/02; F01N3/10
Domestic Patent References:
| JP2001522713A | ||||
| JP2015208712A |
Foreign References:
| CN105289602A | ||||
| WO2012133526A1 |
Attorney, Agent or Firm:
TRY International Patent Attorney Corporation