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The most efficient after-treatment technology for reducing harmful NOx emissions from mobile and stationary sources of Power plants is the selective catalytic reduction (SCR) of NOx with ammonia (NH3). V2O5-WO3based SCR catalysts reduce NOx selectively between ca. 200 and 500°C. Pure and (NH4VO3:WO3:TiO2) vanadium (V5+) and WO3 doped TiO2 have been synthesized by Sol-gel method, using different sources of carrier materials. Synthesized materials have been characterized by Brunauer-Emmett-Teller (BET) and De-NOx techniques. Specific surface area and the mean pore diameter of the catalysts were determined by BET. BET study shows the catalyst prepared by TiO2/ V2O5-WO3 from titanium oxy sulphate with 87:10:03 ratio of TiO2:Tungsten:Vanadia has highest surface area of 150.32m2/g. Percentage of NOX conversion is found out by De-NOx test. Highest NOx conversion was observed for catalyst prepared by titanium, NOx conversion reduces with increase in calcination time and increases with decrease in space velocity. At 2000hr-1 space velocity the catalyst synthesized from titanium oxysulphate with 85:10:05 ratio of TiO2:Tungsten:Vanadia gives highest NOx conversion of 36.74% at 440oC & TiO2 in 2-Propanol with 87:10:03 ratio of TiO2:Tungsten:Vanadia gives highest NOx conversion of 25.8% at 325oC.
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SCR catalyst, De-NOx
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