Herein,a series of niobium oxide supported cerium nanotubes (CeNTs) catalysts with dif-ferent loading amount of Nb2O5 (0-10 wt％) were prepared and used for selective catalytic reduction of NOx with NH3 (NH3-SCR) in the presence of CH2Cl2.Commercial V2O5-WO3-TiO2 catalyst was also prepared for comparison.The physcial properties and chemical prop-erties of the Nb2O5 loaded cerium nanotubes catalysts were investigated by X-ray diffrac-tometer,Transmission electron microscope,Brunauer-Emmett-Teller specific surface area,H2-temperature programmed reduction,NH3-temperature programmed desorption and X-ray photoelectron spectroscopy.The experiment results showed that the loading amount of Nb2O5 had a significant effect on the catalytic performance of the catalysts.10 wt.％Nb-CeNTs catalyst presented the best NH3-SCR performance and degradation efficiency of CH2Cl2 among the prepared catalysts,due to its superior redox capability,abundant surface oxygen species and acid sites,the interaction between Nb and Ce,higher ratio of Nb4+/(Nb5+ + Nb4+) and Ce3+/(Ce3+ + Ce4+),as well as the special tubular structure of cerium nanotube.This study may provide a practical approach for the design and synthesis of SCR catalysts for the simultaneously removal NOx and chlorinated volatile organic compounds(CVOCs) emitted from the stationary industrial sources.

Key Laboratory of Environment Remediation and Ecological Health,Ministry of Education,College of Environmental and Resources Science,Zhejiang University,Hangzhou 310058,China;Zhejiang Provincial Engineering Research Center of Industrial Boiler and Furnace Flue Gas Pollution Control,Hangzhou 310058,China

[1]Weilong Ouyang;Yi Zhou;Xiaoqi Fei;Yarong Bai;Haiqiang Wang;Zhongbiao Wu-.Simultaneous removal of NO and dichloromethane(CH2Cl2) over Nb-loaded cerium nanotubes catalyst)[J].环境科学学报（英文版）,2022(01):175-184

CeNTs,physcial,Nb4+

Simultaneous,removal,dichloromethane,CH2Cl2,over,loaded,cerium,nanotubes,Herein,series,niobium,oxide,supported,catalysts,ferent,loading,amount,Nb2O5,wt,were,prepared,used,selective,catalytic,reduction,NOx,NH3,SCR,presence,Commercial,V2O5,WO3,TiO2,was,also,comparison,properties,chemical,investigated,by,ray,diffrac,tometer,Transmission,microscope,Brunauer,Emmett,Teller,specific,surface,area,temperature,programmed,desorption,photoelectron,spectroscopy,experiment,results,showed,that,had,significant,effect,performance,presented,best,degradation,efficiency,among,due,its,superior,redox,capability,abundant,oxygen,species,acid,sites,interaction,between,higher,ratio,Nb5+,Ce3+,Ce4+,well,special,tubular,structure,This,study,may,provide,practical,approach,design,synthesis,simultaneously,chlorinated,volatile,organic,compounds,CVOCs,emitted,from,stationary,industrial,sources

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