Degradation of chlorobenzene by non-thermal plasma coupled with catalyst:influence of catalyst,interaction between plasma and catalyst  

作　　者：石秀娟 梁文俊 尹国彬 刘佳 Xiujuan SHI;Wenjun LIANG;Guobin YIN;Jia LIU(Key Laboratory of Beijing on Regional Air Pollution Control,Beijing University of Technology,Beijing 100124,People’s Republic of China;State Environmental Protection Key Laboratory of Odor Pollution Control,Tianjin Academy of Ecoenvironmental Sciences,Tianjin 300191,People’s Republic of China)

机构地区：[1]Key Laboratory of Beijing on Regional Air Pollution Control,Beijing University of Technology,Beijing 100124,People’s Republic of China [2]State Environmental Protection Key Laboratory of Odor Pollution Control,Tianjin Academy of Ecoenvironmental Sciences,Tianjin 300191,People’s Republic of China

出　　处：《Plasma Science and Technology》2023年第5期170-183,共14页等离子体科学和技术（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2018YFC1903100);Beijing Municipal Science and Technology Project Program(No.Z191100009119002);the State Environmental Protection Key Laboratory of Odor Pollution Control(No.20210504)。

摘　　要：Non-thermal plasma(NTP)is considered to be a promising technology for the removal of volatile organic compounds;however,its application is limited by low CO_(2) selectivity and undesirable by-products.To overcome these issues,this paper discusses the degradation of chlorobenzene(CB)in systems of NTP coupled with catalysts,and the influence of catalyst locations in the NTP was investigated.In addition,the interaction between plasma and catalyst was also explored.The results indicated that the degradability of CB was remarkably improved through the combination of NTP with catalysts,and the formation of ozone was effectively inhibited.The degradation efficiency increased from 33.9%to 79.6%at 14 kV in the NTPcatalytic system,while the ozone concentration decreased from 437 to 237 mg m^(-3),and the degradation efficiency of in plasma catalysis(IPC)systems was superior to that of the post plasma catalysis system,while the inhibition ability of ozone exhibited an opposing trend.In the IPC system,the degradation efficiency was 87.7%at 14 k V,while the ozone concentration was151 mg m^(-3).Besides,the plasma did not destroy the pore structure and crystal structure of the catalyst,but affected the surface morphology and redox performance of the catalyst.Thus,NTP coupled catalytic system could improve the degradation performance of CB.Furthermore,the plasma discharge characteristics played a major role in the NTP synergistic catalytic degradation of CB.Finally,based on the experiment analysis results,the general reaction mechanism of CB degradation in an IPC reaction system was proposed.

关 键 词：non-thermal plasma CHLOROBENZENE CATALYSTS OZONE decomposition mechanism 

分 类 号：O643.36[理学—物理化学] X701[理学—化学]