摘要
This paper investigates the degradation of chlorobenzene by dielectric barrier discharge(DBD)coupled with MnO_(x)/γ-Al_(2)O_(3) catalysts.MnO_(x)/γ-Al_(2)O_(3) catalysts were prepared using the impregnation method and were characterized in detail by N_(2 )adsorption/desorption,x-ray diffraction and x-ray photoelectron spectroscopy.Compared with the single DBD reactor,the coupled reactor has a better performance on the removal rate of chlorobenzene,the selectivity of CO_(x),and the inhibition of ozone production,especially at low discharge voltages.The degradation rate of chlorobenzene and selectivity of CO_(x) can reach 96.3%and 53.0%,respectively,at the specific energy density of 1350 J l^(-1).Moreover,the ozone concentration produced by the discharge is significantly reduced because the MnO_(x)/Al_(2)O_(3)catalysts contribute to the decomposition of ozone to form oxygen atoms for the oxidation of chlorobenzene.In addition,based on analysis of the byproducts,the decomposition mechanism of chlorobenzene in the coupled reactor is also discussed.
作者
Yanghaichao LIU
Liping LIAN
Weixuan ZHAO
Renxi ZHANG
Huiqi HOU
刘杨海超;连莉萍;赵玮璇;张仁熙;侯惠奇(Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP^(3)),Institute of Environmental Science,Fudan University,Shanghai 200433,People’s Republic of China;National Engineering Laboratory for VOCs Pollution Control Material&Technology,University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China)
基金
National Natural Science Foundation of China(No.21577023)
the Special Research Project on Causes and Control Technology of Air Pollution(Nos.2017YFC0212905)
the Science and Technology Innovation Action Project Supported by the Science and Technology Commission of Shanghai Municipality(No.18DZ1202605).
