Enhancing mechanisms of N-doped biomass carbon on the vanadium-based catalyst for furan degradation at low temperature  

作　　者：Ling Wang Minghui Tang Hongxian Li Jiamin Ding Juan Qiu Shengyong Lu 

机构地区：[1]State Key Laboratory of Clean Energy Utilization,Zhejiang University,38#Zheda Road,Hangzhou,310027,China [2]Taizhou Institute of Zhejiang University,Taizhou,318012,China [3]Qingshanhu Energy Research Center,Zhejiang University,1699 Dayuan Road,Qingshanhu Science and Technology City,Hangzhou,311300,China

出　　处：《Waste Disposal and Sustainable Energy》2024年第1期1-9,共9页废弃物处置与可持续能源（英文）

基　　金：supported by the Natural Science Foundation of Zhejiang Province(No.LY21E060007),the National Natural Science Foundation of China(No.52006191).

摘　　要：Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans(PCDD/Fs)have attracted widespread concern due to their high toxicity,and their difficult manipulation in laboratories has made the research process tough.Thus,in our work,furan is selected as the model compound owing to the same structure of a central oxygenate ring.Although catalytic oxidation is regarded as an effective and applicable method for the abatement of PCDD/Fs,the synthesis of low-temperature catalysts is still a challenging problem in practical applications.Considering this situation,we prepared a novel V_(2)O_(5)/TiO_(2)catalyst modified with N-doped hierarchical porous carbon(NHPC)via a wet impregnation method.The V/T-1%NHPC catalyst could achieve expectant low-temperature performances with 50%furan conversion at 150℃and a complete conversion at 200℃,which decreased 23℃and 40℃compared to the V/T catalyst respectively.Moreover,the addition of NHPC presented lifting chemical stability during long-time test.The addition of NHPC in V/T catalysts decreased the formation of crystalline V_(2)O_(5) and increased the percentages of V^(5+)and O_(lat),which improved the utilization of vanadium ions and the catalytic activity.Simultaneously,the higher binding energy shift of O_(lat) implied more reaction possibility with other oxidise reactants.Importantly,this work proved the lifting catalytic activity by the interaction between catalysts and NHPC,and proposed the promoting effects of the N element.The results showed that the content of the pyridinic N and graphitic N in NHPC changed after combining with V/T catalyst,which played crucial roles in the excellent catalytic performance.Overall,this work provides comprehensive research of the V/T-1%NHPC catalyst toward furan oxidation at low temperature and explain the effects of N-doped biomass carbon in catalytic activity clearly,which gave a new thought to design low-temperature catalysts in PCDD/Fs degradation.Besides,the internal functional mechanisms of N species are worth further ex

关 键 词：Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans FURAN Low-temperature catalyst V_(2)O_(5)/TiO_(2)catalyst N-DOPED 

分 类 号：O64[理学—物理化学]