Monolithic Cr–V/TiO2/cordierite catalysts prepared by in-situ precipitation and impregnation for low-temperature NH3-SCR reactions |
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| Affiliation: | 1. Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;2. Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China;1. School of Energy Source and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, PR China;2. Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai, PR China;1. School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha 410114, PR China;2. Key Laboratory of Renewable Energy Electric-Technology of Hunan Province, Changsha 410114, PR China |
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| Abstract: | Cr–V/TiO2/cordierite monolithic catalysts for low-temperature NH3-SCR reactions were prepared by in-situ precipitation and impregnation. The adhesion and surface characteristics were examined using ultrasonic oscillation and scanning electron microscopy, respectively. The results showed that the TiO2 coating adhered well to cordierite by in-situ precipitation. If the loading of the active component, Cr–V, was at least 5.5% by weight, the catalyst achieved excellent SCR activity, with an NOx conversion above 90%, in the temperature range 160–300 °C. The Cr–V/TiO2/cordierite monolithic catalysts had relatively high stability in the presence of SO2. |
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