High activity of CeO_2-TiO_2 composites for deep oxidation of 1,2-dichloroethane |
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| Affiliation: | 1. College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China;2. School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, China;1. Department of Environmental Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China;2. Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control, 866 Yuhangtang Road, Hangzhou 310058, PR China;1. State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi''an Jiaotong University, Xi''an, 710049, Shaanxi, PR China;2. National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, PR China;3. Department of Environmental Engineering and Earth Sciences, Clemson University, Anderson, South Carolina, 29625, United States;4. Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi''an, 710049, Shaanxi, PR China |
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| Abstract: | CeO_2-TiO_2 catalysts prepared by different methods were investigated for deep oxidation of 1,2-dichloroethane(DCE),as a typical representative of the chlorinated volatile organic compounds(CVOCs).Characterization analysis reveals that CeO_2-TiO_2 catalysts prepared by sol-gel and coprecipitation methods exhibit higher specific area,CeO_2 and TiO_2 particles are highly dispersed into each other and the reducibility and mobility of active oxygen species are obviously promoted due to the strong interaction between the two catalysts CeO_2 and TiO_2,resulting in higher catalytic activity for DCE oxidation to and less chlorinated byproduct.The high calcination temperature would lead to the formation of a new monoclinic phase Ce_(0.3)Ti_(0.7)O_2 and sintering,which is the main reason for the catalytic activity for DCE oxidation markedly decreases. |
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| Keywords: | Synergism Chlorinated VOCs Catalytic oxidation Rare earths |
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