Degradation of o-dichlorobenzene by DBD-NTP co-modified titanium gel catalyst  

作　　者：Wenbo Zhang Yi Xing Wei Su Jiaqing Wang Haoqi Jia Yongkang Cui Jing Chen Hui Zhang 

机构地区：[1]School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants,University of Science and Technology Beijing,Beijing 100083,China [3]Guangdong Province Engineering Laboratory for Air Pollution Control,Guangzhou 510530,China [4]College of Environmental and Resource Sciences,Shanxi University,Taiyuan 030006,China [5]Sinosteel Maanshan Mine Research Institute Co.Ltd.,Anhui 243071,China

出　　处：《Journal of Environmental Sciences》2024年第9期71-84,共14页环境科学学报（英文版）

基　　金：supported by the National Key R&D Program of China(No.2022YFE0208100);the Key Science and Technology Planning Project of HBIS Group Co.,Ltd.(No.HG2020204-2);the Hebei Provincial Key R&D Program Project(No.22373805D);the Guangdong Air Pollution Control Engineering Laboratory Open Fund Project(No.20193236-09-06)。

摘　　要：In order to study the degradation process of dioxins in industrial flue gas,the decomposition of o-dichlorobenzene(o-DCB)in a DBD plasma catalytic reactor was investigated.The results showed that an NTP-catalyzed system,especially using the Cu Mn Ti Oxcatalyst,had better o-DCB degradation performance compared to plasma alone.The combination of the Cu Mn Ti Oxcatalyst with NTP can achieve a degradation efficiency of up to 97.2%for o-DCB;the selectivity of CO and CO_(2)and the carbon balance were 40%,45%,and 85%,respectively.The dielectric constant and electrical property results indicated that the surface discharge capacity of the catalysts played a major role in the degradation of o-DCB,and a higher dielectric constant could suppress the plasma expansion and enhance the duration of the plasma discharge per discharge cycle.According to the O1s XPS and O_(2)-TPD results,the conversion of CO to CO_(2)follows the M-v-K mechanism;thus,the active species on the catalyst surface play an important role.Moreover,the Cu Mn Ti Oxand NTP mixed system exhibited excellent stability,which is probably because Cu doping improved the lifetime of the catalyst.This work can provide an experimental and theoretical basis for research in the degradation of o-DCB by plasma catalyst systems.

关 键 词：o-dichlorobenzene(o-DCB) Non-thermal plasma catalysis Ozone concentration 

分 类 号：X701[环境科学与工程—环境工程]