Tailoring the simultaneous abatement of methanol and NO_(x) on Sb-Ce-Zr catalysts via copper modification

作     者：Xiaoqiang Wang Yanye Zhu Yue Liu Xiaole Weng Zhongbiao Wu Xiaoqiang Wang;Yanye Zhu;Yue Liu;Xiaole Weng;Zhongbiao Wu

作者机构：Department of Environmental EngineeringZhejiang UniversityHangzhou 310058China College of BiologicalChemical Science and EngineeringJiaxing UniversityJiaxing 314001China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2022年第16卷第10期

页      面：65-75页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：the fnancial support of Fundamental Research Funds for the Central Universities(No.2021XZZX025) National Natural Science Foundation of China(No.22076164) Research Startup Program of Jaxing University(No.CD70520027) 

主　　题：Copper modification Sb-CeZr_(2)O_(x)catalyst NO_(x) Methanol Simultaneous removal 

摘      要：Simultaneously removal of NO_(x)and VOCs over NH3-SCR catalysts have attracted lots of attention ***,the presence of VOCs would have negative effect on deNOx efficiency especially at low *** this study,copper modification onto Sb_(0.5)CeZr_(2)O_(x)(SCZ)catalyst were performed to enhance the catalytic performance for simultaneous control of NNO_(x)and *** was obtained that copper addition could improve the low-temperature activity of both NOx conversion and methanol oxidation,where the optimal catalyst(Cu_(0.05)SCZ)exhibited a deNOx activity of 96%and a mineralization rate of 97%at 250℃,which are around 10%higher than that of Cu free *** characterization results showed that copper addition could obviously enhance the redox capacity of the *** such,the inhibition effect of methanol incomplete oxidation on NO adsorption and NH3 activation were then lessened and the conversion of surface formamide species were also accelerated,resulting in the rising of NOx conversion at low ***,excessive copper addition would damage the Sb-Ce-Zr oxides solid solution structure owing to Cu-Ce strong interactions,decreasing the surface area and ***,due to easier over-oxidation of NH3 with more Cu addition,the temperature window for NOx conversion would become quite *** findings could provide useful guidelines for the synergistic removal of VOCs over SCR catalyst in real application.