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DBD coupled with MnOx/γ-Al2O3 catalysts for the degradation of chlorobenzene 被引量:4
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作者 yanghaichao liu Liping LIAN +2 位作者 Weixuan ZHAO Renxi ZHANG Huiqi HOU 《Plasma Science and Technology》 SCIE EI CAS CSCD 2020年第3期115-122,共8页
This paper investigates the degradation of chlorobenzene by dielectric barrier discharge(DBD)coupled with MnOx/γ-Al2O3 catalysts.MnOx/γ-Al2O3 catalysts were prepared using the impregnation method and were characteri... This paper investigates the degradation of chlorobenzene by dielectric barrier discharge(DBD)coupled with MnOx/γ-Al2O3 catalysts.MnOx/γ-Al2O3 catalysts were prepared using the impregnation method and were characterized in detail by N2 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 COx,and the inhibition of ozone production,especially at low discharge voltages.The degradation rate of chlorobenzene and selectivity of COx 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 MnOx/Al2O3 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. 展开更多
关键词 PLASMA catalytsis system chlorinated VOCS MnOx/Al2O3 CATALYSTS
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Decomposition of dioxin-like components in a DBD reactor combined with Hg/Ar electrodeless ultraviolet
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作者 Weixuan ZHAO Liping LIAN +4 位作者 Yanpei WU yanghaichao liu Renxi ZHANG Gang LUO Huiqi HOU 《Plasma Science and Technology》 SCIE EI CAS CSCD 2020年第3期34-39,共6页
A new combined reactor with Hg/Ar electrodeless ultraviolet(EDUV)activated by DBD for 3,4-dichlorodiphenyl ether abatement is presented.The effect of specific input energy and feeding gas component on 3,4-dichlorodiph... A new combined reactor with Hg/Ar electrodeless ultraviolet(EDUV)activated by DBD for 3,4-dichlorodiphenyl ether abatement is presented.The effect of specific input energy and feeding gas component on 3,4-dichlorodiphenyl ether removal efficiency has been explored.Compared with a single DBD system,this new combined process performed a significant promotion on 3,4-dichlorodiphenyl ether abatement.Experiment results verified that active oxygen clearly contributed to the synergistic activity of DBD-EDUV system.Results of emission spectra showed that UV radiation of 253.7 nm could be detected in the DBD-EDUV system.Further,the products of DBD-EDUV process were analyzed via gas chromatographymass spectrometer(GC-MS)to reveal involved decomposition mechanism. 展开更多
关键词 dielectric barrier discharge(DBD) dioxin-like 3 4-dichlorodiphenyl ETHER EDUV PHOTOLYSIS
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