High-Dispersed V(2)O(5)-CuO(X) Nanoparticles on h-BN in NH(3)-SCR and NH(3)-SCO Performance

Typically, to meet emission regulations, the selective catalytic reduction of NO(X) with NH(3) (NH(3)-SCR) technology cause NH(3) emissions owing to high NH(3)/NO(X) ratios to meet emission regulations. In this study, V-Cu/BN-Ti was used to remove residual NO(X) and NH(3). Catalysts were evaluated for selective catalytic oxidation of NH(3) (NH(3)-SCO) in the NH(3)-SCR reaction at 200–300 °C. The addition of vanadium and copper increased the number of Brønsted and Lewis acid sites available for the reaction by increasing the ratio of V(5+) and forming Cu(+) species, respectively. Furthermore, h-BN was dispersed in the catalyst to improve the content of vanadium and copper species on the surface. NH(3) and NO(X) conversion were 98% and 91% at 260 °C, respectively. Consequently, slipped NH(3) (NH(3)-Slip) emitted only 2% of the injected ammonia. Under SO(2) conditions, based on the NH(3) oxidation reaction, catalytic deactivation was improved by addition of h-BN. This study suggests that h-BN is a potential catalyst that can help remove residual NO(X) and meet NH(3) emission regulations when placed at the bottom of the SCR catalyst layer in coal-fired power plants.