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Low temperature selective catalytic reduction of NOX with NH3 by activated coke loaded with FexCoyCezOm: The enhanced activity, mechanism and kinetics
Lu, Pei1,2; Li, Rui1,2; Xing, Yi1,2; Li, Yuran3; Zhu, Tingyu3; Yue, Huifang1,2; Wu, Wanrong1,2
2018-12-01
发表期刊FUEL
ISSN0016-2361
卷号233页码:188-199
摘要The existing catalysts based on activated coke had generally poor denitration performance at low temperature, which could not meet the urgent needs of power plants and steel enterprises. In this study, activated coke loaded with FexCoyCezOm was prepared by incipient wetness impregnation method and employed to remove NOx at 100-350 degrees C in simulated flue gas. 3% Fe0.6Co0.2Ce0.2O1.57/AC catalyst exhibited highest NOx removal efficiency as it had more than 70% NOx conversion rate at 100 degrees C and achieved more than 90% denitrition efficiency at 250-350 degrees C. The catalyst also showed stable catalytic performance and good resistance to H2O or/and SO2 at 250 degrees C. Based on the results of Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), temperature programmed desorption (TPD), temperature programmed reduction (TPR) and Fourier transform infrared spectroscopy (FTIR), the enhanced performance could be attributed to the co-participation of Fe, Co and Ce species with different valence states, the high concentration of chemisorbed oxygen, highly dispersed active components, the increase of weak acid sites, good redox properties of metallic oxides and abundant founctional groups on the catalyts surface. Finally, the possible mechanism and kinetics of NOx removal over FexCoyCezOm/AC catalyst were discussed in detail, which revealed that the enhanced performance was resulted from the increased active sites and the redox cycle among Fe, Co and Ce.
关键词Activated coke Low-temperature SCR NOx The enhanced activity Mechanism and kinetics
DOI10.1016/j.fuel.2018.05.076
语种英语
关键词[WOS]SIMULATED FLUE-GAS ; DISPERSED MNOX/SAPO-34 CATALYST ; ELEMENTAL MERCURY ; SIMULTANEOUS REMOVAL ; SULFUR RESISTANCE ; NITROGEN-OXIDES ; SO2 RESISTANCE ; PERFORMANCE ; NH3-SCR ; SCR
资助项目National Key R&D Program of China[2017YFC0210303] ; Beijing Science and Technology Project[D161100004516001] ; Open fund of National Engineering Laboratory for Mobile Source Emission Control Technology[NELMS2017A14] ; Fundamental Research Funds for the Central Universities
WOS研究方向Energy & Fuels ; Engineering
WOS类目Energy & Fuels ; Engineering, Chemical
项目资助者National Key R&D Program of China ; Beijing Science and Technology Project ; Open fund of National Engineering Laboratory for Mobile Source Emission Control Technology ; Fundamental Research Funds for the Central Universities
WOS记录号WOS:000441893200020
出版者ELSEVIER SCI LTD
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/25939
专题中国科学院过程工程研究所
通讯作者Xing, Yi
作者单位1.Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China
2.Univ Sci & Technol Beijing, Beijing Key Lab Resource Oriented Treatment Ind P, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Cleaner Hydromet Prod Technol, Beijing 100190, Peoples R China
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Lu, Pei,Li, Rui,Xing, Yi,et al. Low temperature selective catalytic reduction of NOX with NH3 by activated coke loaded with FexCoyCezOm: The enhanced activity, mechanism and kinetics[J]. FUEL,2018,233:188-199.
APA Lu, Pei.,Li, Rui.,Xing, Yi.,Li, Yuran.,Zhu, Tingyu.,...&Wu, Wanrong.(2018).Low temperature selective catalytic reduction of NOX with NH3 by activated coke loaded with FexCoyCezOm: The enhanced activity, mechanism and kinetics.FUEL,233,188-199.
MLA Lu, Pei,et al."Low temperature selective catalytic reduction of NOX with NH3 by activated coke loaded with FexCoyCezOm: The enhanced activity, mechanism and kinetics".FUEL 233(2018):188-199.
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