The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2024
Filed:
Sep. 04, 2020
Grirem Advanced Materials Co., Ltd., Beijing, CN;
Rare Earth Functional Materials (Xiong 'an) Innovation Center Co., Ltd., Hebei, CN;
Grirem Hi-tech Co., Ltd., Hebei, CN;
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;
Zongyu Feng, Beijing, CN;
GRIREM ADVANCED MATERIALS CO., LTD., Beijing, CN;
Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Baoding, CN;
GRIREM HI-TECH CO., LTD., Langfang, CN;
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 REBO-(1-A)CeZrMO, 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 REMnO, 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 CeZrMO, 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.