Inorganic Chemicals Industry >
Study on denitration performance of Y doped Fe2O3 catalyst
Received date: 2022-04-01
Online published: 2022-11-23
In order to improve the denitration performance of Fe2O3 catalyst and expand the active temperature window of the catalyst，the co-precipitation method was used to introduce the promoter Y to modify the Fe2O3 catalyst.The samples were characterized by X-ray diffraction（XRD），N2 isothermal adsorption desorption（N2-BET），X-ray photoelectron spectroscopy（XPS），NH3 temperature programmed desorption（NH3-TPD） and H2 temperature programmed reduction（H2-TPR）.The XRD and N2-BET results showed that doping of Y changed the catalyst structure，increased the specific surface area and reduced pore size of the catalyst.The XPS and NH3-TPD demonstrated that Y-doped Fe2O3 had more surface adsorbed oxygen（OI），Fe2+ and more acid amount.The H2-TPR results showed that Y doping slightly reduced the redox ability of the catalyst.The denitration performance of Fe2O3 catalysts doped with different contents of Y at 150~400 ℃ was tested.Fe9Y1O x catalyst had the best denitration activity，reaching 81.8% at 300 °C.
Key words： yttrium; denitration catalyst; Fe2O3
Peining DU , Shizhong LUO , Renjun Tan , Fangli JING . Study on denitration performance of Y doped Fe2O3 catalyst[J]. Inorganic Chemicals Industry, 2022 , 54(11) : 137 -142 . DOI: 10.19964/j.issn.1006-4990.2022-0090
| 1 | LIU Fudong, SHAN Wenpo, LIAN Zhihua, et al.The smart surface modification of Fe2O3 by WO x for significantly promoting the selective catalytic reduction of NO x with NH3 [J].Applied Catalysis B：Environmental,2018,230: 165-176. |
| 2 | JIANG Haoxi, ZHANG Lu, ZHAO Jing, et al.Study on MnO x -FeO y composite oxide catalysts prepared by supercritical antisolvent process for low-temperature selective catalytic reduction of NO x [J].Journal of Materials Research,2016,31(6):702-712. |
| 3 | XIONG Zhibo, HU Qiang, LIU Dunyu, et al.Influence of partial substitution of iron oxide by titanium oxide on the structure and activity of iron-cerium mixed oxide catalyst for selective catalytic reduction of NO x with NH3 [J].Fuel,2016,165: 432-439. |
| 4 | GUO Kai, JI Jiawei, OSUGA R, et al.Construction of Fe2O3 loaded and mesopore confined thin-layer titania catalyst for efficient NH3-SCR of NO x with enhanced H2O/SO2 tolerance[J].Applied Catalysis B：Environmental,2021,287.Doi:10.1016/j.apcatb.2021.119982. |
| 5 | LI Xiang, LI Junhua, PENG Yue, et al.Selective catalytic reduction of NO with NH3 over novel iron-tungsten mixed oxide catalyst in a broad temperature range[J].Catalysis Science & Technology,2015,5(9):4556-4564. |
| 6 | LIU Fudong, HE Hong, ZHANG Changbin, et al.Selective catalytic reduction of NO with NH3 over iron titanate catalyst：Catalytic performance and characterization[J].Applied Catalysis B：Environmental,2010,96(3/4):408-420. |
| 7 | XIONG Zhibo, LU Chunmei, GUO Dongxu, et al.Selective catalytic reduction of NO x with NH3 over iron-cerium mixed oxide catalyst：Catalytic performance and characterization[J].Journal of Chemical Technology & Biotechnology,2013,88(7):1258-1265. |
| 8 | QU Weiye, CHEN Yaxin, HUANG Zhiwei, et al.Active tetrahedral iron sites of γ-Fe2O3 catalyzing NO reduction by NH3 [J].Environmental Science & Technology Letters,2017,4(6):246-250. |
| 9 | WU Jiahui, JIN Shuangling, WEI Xudong, et al.Enhanced sulfur resistance of H3PW12O40-modified Fe2O3 catalyst for NH3-SCR：Synergistic effect of surface acidity and oxidation ability[J].Chemical Engineering Journal,2021,412.Doi:10.1016/j.cej.2021.128712. |
| 10 | WANG Huimin, NING Ping, ZHANG Yaqing, et al.Highly efficient WO3-FeO x catalysts synthesized using a novel solvent-free method for NH3-SCR[J].Journal of Hazardous Materials,2020,388.Doi:10.1016/j.jhazmat.2019.121812. |
| 11 | XIE Shangzhi, LI Lulu, JIN Lijian, et al.Low temperature high activity of M（M=Ce，Fe，Co，Ni） doped M-Mn/TiO2 catalysts for NH3-SCR and in situ DRIFTS for investigating the reaction mechanism[J].Applied Surface Science,2020,515.Doi:10.1016/j.apsusc.2020.146014. |
| 12 | WU Xu, WANG Ruonan, DU Yali, et al.Performance enhancement of NH3-SCR via employing hydrotalcite-like precursor to induce the decoration of NiO by TiO2 phase[J].Molecular Catalysis,2019,467: 150-160. |
| 13 | SUN Peng, HUANG Shuxian, GUO Ruitang, et al.The enhanced SCR performance and SO2 resistance of Mn/TiO2 catalyst by the modification with Nb：A mechanistic study[J].Applied Surface Science,2018,447: 479-488. |
| 14 | ZHANG Kai, WANG Jingjing, GUAN Pufang, et al.Low-temperature NH3-SCR catalytic characteristic of Ce-Fe solid solutions based on rare earth concentrate[J].Materials Research Bulletin,2020,128.Doi:10.1016/j.materresbull.2020.110871. |
| 15 | SUN Chuanzhi, CHEN Wei, JIA Xuanxuan, et al.Comprehensive understanding of the superior performance of Sm-modified Fe2O3 catalysts with regard to NO conversion and H2O/SO2 resistance in the NH3-SCR reaction[J].Chinese Journal of Catalysis,2021,42(3):417-430. |
| 16 | LIU Zhiming, SU Hang, CHEN Biaohua, et al.Activity enhancement of WO3 modified Fe2O3 catalyst for the selective catalytic reduction of NO x by NH3 [J].Chemical Engineering Journal,2016,299: 255-262. |
| 17 | REN Zhaoyong, TENG Yunfei, ZHAO Leyu, et al.Keggin-tungstophosphoric acid decorated Fe2O3 nanoring as a new catalyst for selective catalytic reduction of NO x with ammonia[J].Catalysis Today,2017,297: 36-45. |
| 18 | YANG Jie, REN Shan, ZHANG Tianshi, et al.Iron doped effects on active sites formation over activated carbon supported Mn-Ce oxide catalysts for low-temperature SCR of NO[J].Chemical Engineering Journal,2020,379.Doi:10.1016/j.cej.2019.122398. |
| 19 | CHOU Chenyu, LOBO R F.Direct conversion of CO2 into methanol over promoted indium oxide-based catalysts[J].Applied Catalysis A：General,2019,583.Doi:10.1016/j.apcata.2019.117144. |
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