文献类型：期刊文献

英文题名：Environmental Catalysis for NOx Reduction by Manipulating the Dynamic Coordination Environment of Active Sites

作者：Han, Lupeng[1];Wang, Xiyang[2];Wang, Fuli[1];Shen, Yongjie[3];Zhang, Hengxiang[1];Hu, Weiwei[1];Gao, Min[3];Wu, Yimin A.[2];Xie, Ming[4];Chen, Jianfu[5,6];Zhang, Dengsong[1]

机构：[1]Shanghai Univ, Innovat Inst Carbon Neutral, Coll Sci, Int Joint Lab Catalyt Chem,State Key Lab Adv Speci, Shanghai 200444, Peoples R China;[2]Univ Waterloo, Waterloo Inst Nanotechnol, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada;[3]Hokkaido Univ, Inst Chem React Design & Discovery WPI ICReDD, Sapporo 0010021, Japan;[4]Univ Bath, Dept Chem Engn, Bath BA2 7AY, England;[5]East China Univ Sci & Technol, Ctr Computat Chem, State Key Lab Green Chem Engn & Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[6]East China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China

年份：2025

卷号：59

期号：4

起止页码：2306

外文期刊名：ENVIRONMENTAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20250517789093);WOS:【SCI-EXPANDED(收录号:WOS:001405321700001)】；

基金：The authors from Shanghai University gratefully acknowledge financial support from the National Key R&D Program of China (2021YFB3500600), National Natural Science Foundation of China (22125604, 22436003, and 22106100), and the Science and Technology Commission of Shanghai Municipality (23230713700, 24230711600, and 22QA1403700). These works for Ce L3-edge XAFS were performed at the HXMA beamline of the Canadian Light Source (CLS), a national research facility of the University of Saskatchewan, which is supported by the Canada Foundation for Innovation (CFI), the Natural Sciences and Engineering Research Council (NSERC), the National Research Council (NRC), and the Government of Saskatchewan.

语种：英文

外文关键词：NO x; selective catalyticreduction; SO2-tolerant catalysts; environmentalcatalysis; coordination environment

摘要：Nowadays, it is challenging to achieve SO2-tolerant environmental catalysis for NOx reduction because of the thermodynamically favorable transformation of reactive sites to inactive sulfate species in the presence of SO2. Herein, we achieve enhanced low-temperature SO2-tolerant NOx reduction by manipulating the dynamic coordination environment of active sites. Engineered by coordination chemistry, SiO2-CeO2 composite oxides with a short-range ordered Ce-O-Si structure were elaborately constructed on a TiO2 support. A dynamic coordination environment of active sites is demonstrated from a Ce-O-Si local structure to a low-coordinated Ce-SO42- species in the presence of SO2. The low-coordinated Ce-SO42- species as new active sites maintain a high NO removal efficiency by preserving the good adsorption and activation capacity of NO and NH3 reactants. This work proposes a new notion to improve the SO2 resistance of catalysts by regulating the coordination environment of sulfated active sites, which is of significance for SO2-tolerant environmental catalysis in practical applications.