Abstract
The catalysts SO42−Mn–Co–Ce/TiO2/SiO2 were investigated for the low-temperature SCR of NO with NH3 in the presence of SO2. An excellent SO2 durability at low temperature was obtained with the catalyst used TiO2/SiO2 as support and modified with SO42−. The catalyst sulfated with 0.1mol/L H2SO4 solution and then calcined at 300°C exhibited the best NOx conversion efficiency of 99.5% at 250°C in the presence of 50ppm SO2. The conversion efficiency did not decrease after repeatedly used for 8 times.
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