US 12,109,551 B2
Rare-earth-manganese/cerium-zirconium-based composite compound, method for preparing same and use thereof
Xiaowei Huang, Beijing (CN); Yongqi Zhang, Beijing (CN); Hongwei Li, Beijing (CN); Zhizhe Zhai, Beijing (CN); Qiang Zhong, Beijing (CN); He Zhang, Beijing (CN); Meisheng Cui, Beijing (CN); Yongke Hou, Beijing (CN); Hao Wang, Beijing (CN); and Zongyu Feng, Beijing (CN)
Assigned to GRIREM ADVANCED MATERIALS CO., LTD., Beijing (CN); Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Baoding (CN); and GRIREM HI-TECH CO., LTD., Langfang (CN)
Appl. No. 17/422,691
Filed by GRIREM ADVANCED MATERIALS CO., LTD., Beijing (CN); Rare Earth Functional Materials (Xiong 'an) Innovation Center Co., Ltd., Hebei (CN); and GRIREM HI-TECH CO., LTD., Hebei (CN)
PCT Filed Sep. 4, 2020, PCT No. PCT/CN2020/113455
§ 371(c)(1), (2) Date Jul. 13, 2021,
PCT Pub. No. WO2021/043256, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 201910833257.8 (CN), filed on Sep. 4, 2019; and application No. 201910845391.X (CN), filed on Sep. 4, 2019.
Prior Publication US 2022/0184583 A1, Jun. 16, 2022
Int. Cl. B01J 21/06 (2006.01); B01J 6/00 (2006.01); B01J 23/02 (2006.01); B01J 23/10 (2006.01); B01J 35/00 (2006.01); B01J 35/30 (2024.01); B01J 35/39 (2024.01); B01J 37/04 (2006.01); F01N 3/10 (2006.01)
CPC B01J 23/10 (2013.01) [B01J 6/001 (2013.01); B01J 21/066 (2013.01); B01J 23/02 (2013.01); B01J 35/19 (2024.01); B01J 35/397 (2024.01); B01J 35/398 (2024.01); B01J 37/04 (2013.01); F01N 3/10 (2013.01); F01N 2570/14 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A rare-earth-manganese/cerium-zirconium-based composite compound,
comprising a core-shell structure, having a general formula expressed as: A REcBaOb-(1-A)CexZr(1-x-y) MyO2-z, wherein 0.1≤Δ≤0.3;
a shell layer has a main component of rare-earth manganese oxide having a general formula of REcBaOb, wherein RE is a rare-earth element or a combination of more than one rare-earth elements, 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 having a general formula of CexZr (1-x-y) MyO2-z, wherein M is at least one selected from a group consisting of a non-cerium rare-earth element and a transition metal element, 0.1≤x≤0.9, 0≤y≤0.3, and 0.01≤z≤0.3.