Enhanced activity of MnxW0.05Ti0.95 ? xO2 ? δ for selective catalytic reduction of NOx with ammonia by self-propagating high-temperature synthesis |
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| Affiliation: | 1. Department of Energy Chemical Engineering, College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310014, China;2. Processes, Materials, and Solar Energy Laboratory, PROMES-CNRS (UPR 8521), 7 Rue du Four Solaire, 66120 Font-Romeu, France;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 |
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| Abstract: | A series of TiO2 supported MnWOx catalysts MnxW0.05Ti0.95 ? xO2 ? δ (x = 0.05, 0.1, 0.15) were synthesized by solution combustion method. The Mn0.10W0.05Ti0.85O2 ? δ catalyst showed highest activity in NH3-SCR reaction within a broad temperature range of 200 °C–400 °C. XRD and TEM results indicate that the active Mn and W species are highly dispersed over TiO2 support in the form of nanoparticles (4–7 nm). The TEM and H2-TPR results also suggest that a MnWOx phase has been formed on the TiO2, which is beneficial for the activity of the MnxW0.05Ti0.95 ? xO2 ? δ catalysts in the high temperature range of 280 °C–400 °C. |
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