负载MnO(x)、CeMnO(x)和CoMnO(x)的两级介质阻挡放电-催化剂系统去除甲苯的对比研究。
A comparison study of toluene removal by two-stage DBD-catalyst systems loading with MnO(x), CeMnO(x), and CoMnO(x).
作者信息
Huang Yifan, Dai Shaolong, Feng Fada, Zhang Xuming, Liu Zhen, Yan Keping
机构信息
Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
Institute of Industrial Ecology and Environment Research, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
出版信息
Environ Sci Pollut Res Int. 2015 Dec;22(23):19240-50. doi: 10.1007/s11356-015-5121-3. Epub 2015 Aug 9.
This paper studies the toluene removal by a two-stage dielectric barrier discharge (DBD)-catalyst system with three catalysts: MnO(x)/ZSM-5, CoMnO(x)/ZSM-5, and CeMnO(x)/ZSM-5. V-Q Lissajous method, Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD), and X-ray photoelectron (XPS) are used to characterize the DBD and catalysts. The DBD processing partially oxidizes the toluene, and the removal efficiency has a linear relationship with ozone generation. Three DBD-catalyst systems are compared in terms of their toluene removal efficiency, Fourier transform infrared (FTIR) spectra, carbon balance, CO selectivity, CO2 selectivity, and ozone residual. The results show that the DBD-catalyst system with CoMnO(x)/ZSM-5 performs better than the other two systems. It has the highest removal efficiency of about 93.7%, and the corresponding energy yield is 4.22 g/kWh. The carbon balance and CO2 selectivity of CoMnO(x)/ZSM-5 is also better than the other two catalysts. The measurements of two important byproducts including aerosols and ozone are also presented.
本文研究了采用MnO(x)/ZSM-5、CoMnO(x)/ZSM-5和CeMnO(x)/ZSM-5三种催化剂的两级介质阻挡放电（DBD）-催化剂体系对甲苯的去除效果。采用V-Q李萨如图形法、布鲁诺尔-埃米特-泰勒（BET）比表面积法、X射线衍射（XRD）和X射线光电子能谱（XPS）对DBD和催化剂进行了表征。DBD处理使甲苯部分氧化，去除效率与臭氧生成量呈线性关系。从甲苯去除效率、傅里叶变换红外（FTIR）光谱、碳平衡、CO选择性、CO2选择性和臭氧残留量等方面对三种DBD-催化剂体系进行了比较。结果表明，CoMnO(x)/ZSM-5的DBD-催化剂体系性能优于其他两种体系。其去除效率最高，约为93.7%，相应的能量产率为4.22 g/kWh。CoMnO(x)/ZSM-5的碳平衡和CO2选择性也优于其他两种催化剂。还给出了包括气溶胶和臭氧在内的两种重要副产物的测量结果。
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