| 초록 |
MnOX is used as an active metal for various catalytic redox reactions. In particular, since MnOX exhibits excellent SCR (selective catalytic NOX reduction) reaction activity, many studies have been conducted worldwide. Among them, it is reported that MnO2 as major active site exhibits the moderate NOX activity per site. However, the MnOX/TiO2 based catalyst has a problem of low N2 selectivity. In addition, SO2-containing flue gas exhibits low resistance to SO2. In this presentation, to resolve these disadvantages, it was conducted to overcome the aforementioned disadvantages through the introduction of promoters of Ce or Sm. Interestingly, when SO2 was injected, it was confirmed that the selectivity at high temperature was generally increased, and the cause of the increase in selectivity was analyzed using in situ DRIFT. In summary, Sm and Ce were introduced to overcome the shortcomings of the MnOX/TiO2-based catalyst, and the changed surface properties were confirmed at this time, and the effect and mechanism on SO2 were further explored. |
