US 12,420,265 B2
Cerium-tin-based composite oxide catalyst for catalyzing purification of nitrogen oxide, preparation method and application thereof
Hong He, Beijing (CN); Jingjing Liu, Beijing (CN); Yunbo Yu, Beijing (CN); Wenpo Shan, Beijing (CN); Xiaoyan Shi, Beijing (CN); and Yulong Shan, Beijing (CN)
Assigned to RESEARCH CENTER FOR ECO-ENVIRONMENTAL SCINCES, CHINESE ACADEMY OF SCIENCES, Beijing (CN)
Appl. No. 17/790,018
Filed by RESEARCH CENTER FOR ECO-ENVIRONMENTAL SCIENCES, CHINESE ACADEMY OF SCIENCES, Beijing (CN)
PCT Filed Apr. 2, 2020, PCT No. PCT/CN2020/082926
§ 371(c)(1), (2) Date Jun. 29, 2022,
PCT Pub. No. WO2021/134957, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 201911417967.9 (CN), filed on Dec. 31, 2019.
Prior Publication US 2023/0042287 A1, Feb. 9, 2023
Int. Cl. B01J 23/30 (2006.01); B01D 53/86 (2006.01); B01D 53/94 (2006.01); B01J 23/20 (2006.01); B01J 23/28 (2006.01); B01J 27/18 (2006.01); B01J 35/45 (2024.01); B01J 37/00 (2006.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01); B01J 37/04 (2006.01); B01J 37/06 (2006.01); B01J 37/08 (2006.01); F01N 3/20 (2006.01); F01N 3/28 (2006.01)
CPC B01J 23/30 (2013.01) [B01D 53/8628 (2013.01); B01D 53/9418 (2013.01); B01J 23/20 (2013.01); B01J 23/28 (2013.01); B01J 27/1813 (2013.01); B01J 37/009 (2013.01); B01J 37/0205 (2013.01); B01J 37/0213 (2013.01); B01J 37/0236 (2013.01); B01J 37/031 (2013.01); B01J 37/036 (2013.01); B01J 37/04 (2013.01); B01J 37/06 (2013.01); B01J 37/086 (2013.01); F01N 3/2066 (2013.01); F01N 3/2803 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/20776 (2013.01); B01D 2255/2094 (2013.01); B01D 2255/40 (2013.01); B01J 35/45 (2024.01); F01N 2370/04 (2013.01); F01N 2610/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A cerium-tin-based composite oxide catalyst for catalytic purification of nitrogen oxide, comprising the following chemical composition: cerium oxide, tin oxide and amorphous MOx, wherein the M element is selected from any one or a combination of at least two of P, Ti, V, Mn, Fe, Cu, Al, Si, Ni, Hf, or Re;
MOx is dispersed on the surfaces of cerium oxide and tin oxide in a form of unimer, oligomer, or amorphous cluster, wherein x is a number of O required to satisfy the valence balance of the elements;
a molar ratio of cerium element, tin element, and M element is 1:(0.05-5.0):(0.05-3.5), and a molar ratio of M element and Sn element is (0.01-3):1.