Although, Manganese is used as a representative low-temperature Selective Catalytic Reduction (SCR) catalyst, main catalyst components of Mn cause some problems such as high activity only with a high contents and it has problems of poisoning by sulfur. Therefore, in this study, we synthesize low-temperature SCR catalysts with high activity by nano-dispersion of Mn and Ce as active materials by applying Reduced graphene oxide (rGO) support. When graphene is applied, it improves the catalytic reaction site and resistance of particle aggregation based on high specific surface area and electron mobility, and it can suppress SCR side reaction by dispersing nanoparticles.
To confirm this, Mn-Ce was nano-dispersed in rGO support using impregnation method, and SCR catalyst with rGO support was synthesized by adding existing TiO2 support. And for comparison, MnCe and MnCe/TiO2 catalysts were synthesized under the same conditions and then the characteristics were compared. And in order to investigate characteristics of SCR catalysts, De-NOx efficiency, NH3-TPD, TEM comparison and XRD, Raman and BET analyzes are evaluated.