Abstract
CeO2-TiO2 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 CeO2-TiO2 catalysts prepared by sol-gel and coprecipitation methods exhibit higher specific area, CeO2 and TiO2 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 CeO2 and TiO2, 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 Ce0.3Ti0.7O2 and sintering, which is the main reason for the catalytic activity for DCE oxidation markedly decreases.
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