Effect of sulfate ion on the catalytic activity of molybdenum oxide-titanium dioxide (MoOx-TiO2) for the reduction of nitric oxide with ammonia

Removal characteristics of nitrogen oxide of high temperature catalytic filters for simultaneous removal of fine particulate and NOx

“…And NO removal efficiency was constant. As the report in [6][7][8][9], we could confirm the increase of NO removal efficiency by 20 min after injecting SO 2 at the temperature of 300 8C. But after that, NO removal efficiency was slightly decrease.…”

“…According to the research papers [6][7][8][9][10][11], deactivation by SO 2 can be reduced as reaction temperature increases, and SO 2 existence within exhaust gas could improve SCR reaction rates in the temperature over 300 8C. It is known that because active site is generated by the sulfate on the catalyst surface which plays an important role in removal efficiency of NO.…”

Characterization of MoO3–V2O5/Al2O3 catalysts for selective catalytic reduction of NO by NH3

“…2 shows the activity of 6 wt% MoO 3 added to 9 wt% and 12 wt% V 2 O 5 /Al 2 O 3 catalysts for SCR of NO by ammonia. Okazaki [14] reported that alumina-supported molybdenum oxide showed low activity compared to titania-supported vanadia catalyst for the SCR of NO by ammonia. As seen in Fig.…”

Simultaneous SOx /NOx removal in a fluidized bed reactor using natural manganese ore

“…Okazaki et al 17 discovered that the temperature leading to the maximum conversion would increase from 200 °C to 400 °C by addition of an ion, SO 4 2− , to their MnO x /TiO 2 catalyst. They insisted the reactivity of the catalyst should be enforced by increased surface acidity.…”