| Title: | Insights into the Electronic Structure Effect of SnMnO(x) Nanorod Catalysts for Low-Temperature Catalytic Combustion of o-Dichlorobenzene |
| Author(s): | Wang J; Dong F; Tang Z; Niu L; Zhao X; |
| Address: | "School of Petroleum and Chemical, Lanzhou University of Technology, Lanzhou, 730050, P. R. China. State Key Laboratory for Oxo Synthesis and Selective Oxidation, and National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China" |
| ISSN/ISBN: | 1861-471X (Electronic) 1861-471X (Linking) |
| Abstract: | "For the catalytic combustion reaction of chlorinated volatile organic compounds (CVOCs), the redox properties and acid sites of the catalyst surface are key factors in determining the activity, selectivity, and chlorine-resistance stability. Herein, a series of SnMnO(x) catalysts for the catalytic combustion of CVOCs were prepared by the changing of Sn-doping way to regulate the electron valance state of Mn element, including reflux (R-SnMnO(x) ), co-precipitation (C-SnMnO(x) ) and impregnation (I-SnMnO(x) ). It was discovered that the R-SnMnO(x) catalyst had better activity and chlorine resistance than the R-MnO(x) , C-SnMnO(x) and I-SnMnO(x) catalyst, and we discovered that the doping ways of Sn in MnO(x) catalyst could regulate greatly the surface acidity, active oxygen species, the chemical state of Mn(n+) species, and redox ability. Especially, the R-SnMnO(x) catalysts exhibit excellent water resistance, and the reasons were related to the strong interaction of Sn(n+) and Mn(n+) , which could promote obviously the dispersion of active Mn species, form a large number of acid sites, provide the abundant lattice oxygen species, and own the excellent redox ability, which accelerate the rate of charge transfer between Sn(n+) and Mn(n+) (Sn(4+) +Mn(2+) -->Sn(2+) +Mn(4+) ) to produce the abundant active species and accelerate the rapid conversion of benzene and intermediates conversion" |
| Keywords: | CVOCs Catalytic combustion Chlorine resistance Redox ability SnMnOx; |
| Notes: | "PublisherWang, Jie Dong, Fang Tang, Zhicheng Niu, Lei Zhao, Xia eng 52070182/National Natural Science Foundation of China/ ZR2021MB021/Province Natural Science Foundation of Shandong/ 2021-5-2/Science and Technology Program of Chengguan district/ 2021421/Youth Innovation Promotion Association CAS/ ZYFZFX-10/Major Program of the Lanzhou Institute of Chemical Physics, CAS/ Germany 2023/06/26 Chem Asian J. 2023 Aug 15; 18(16):e202300413. doi: 10.1002/asia.202300413. Epub 2023 Jul 10" |
