摘要
采用浸渍法制备了一系列V2O5-MoO3/TiO2和V2O5-MoO3/TiO2-ZrO2催化剂,考察了ω(V2O5/TiO2)、ω(MoO3/TiO2)及ω(ZrO2/TiO2)对催化剂选择性催化还原NO性能的影响。结果表明:ω(V2O5/TiO2)为3%,ω(MoO3/TiO2)为6%,ω(ZrO2/TiO2)为30%的催化剂具有最佳的脱硝活性、较低的SO2氧化率及较好的抗硫抗水性能。采用XRD、TG、BET、SEM、H2-TPR及NH3-TPD等手段,对上述催化剂的理化性能及结构进行表征。结果表明:掺杂ZrO2的催化剂具有更好的选择性催化还原NO活性,这与其较大的比表面积、较多的表面羟基、均匀的粒径、优良的氧化还原性能和较多的弱酸性位有关。
A series of V2 O5-MoO3/TiO2 and V2 O5-MoO3/TiO2-ZrO2 catalysts were prepared by impregnation method.The effects of V2 O5/TiO2,MoO3/TiO2 and ZrO2/TiO2 mass ratio on the selective catalytic reduction of NO were investigated.The results showed that the V3 M6 TZ-30%catalyst had the best denitration activity,low SO2 oxidation rate and good sulfur and water resistance.The physical and chemical properties and structure of V3 M6 T and V3 M6 TZ-30%catalysts were characterized by XRD,TG,BET,SEM,H2-TPR and NH3-TPD.The results showed that the V3 M6 TZ-30%catalyst doped with ZrO2 had better selective catalytic reduction of NO activity.This was related to its large specific surface area,sufficient surface hydroxyl groups and weak acid sites,uniform particle size,excellent redox properties.
作者
吴彦霞
梁海龙
陈鑫
陈琛
王献忠
陈玉峰
戴长友
胡利明
WU Yan-xia;LIANG Hai-long;CHEN Xin;CHEN Chen;WANG Xian-zhong;CHEN Yu-feng;DAI Chang-you;HU Li-ming(Ceramics Science Institute,China Building Materials Academy,Beijing 100024,China;Jiangxi Provincial Key Laboratory of Industrial Ceramics,Pingxiang University,Pingxiang 337055,China;Ruitai Technology Co.,Ltd,Beijing 100024,China)
出处
《环境工程》
CAS
CSCD
北大核心
2020年第5期107-112,119,共7页
Environmental Engineering
基金
国家重点研发计划(2016YFC0209302)。
