Figures (6)  Tables (2)

    • Figure 1. 

      (a) N2 adsorption–desorption isotherms and (b) corresponding pore size distribution of the catalysts.

    • Figure 2. 

      SEM-EDS images of the catalysts: (a) H-8MnOx/AC-500N, (b) H-8MnOx/AC-200A, and (c) E-8MnOx/AC-200A.

    • Figure 3. 

      Mn 2p3/2 and O 1s spectra: (a) H-8MnOx/AC-500N, (b) H-8MnOx/AC-200A, and (c) E-8MnOx/AC-200A.

    • Figure 4. 

      Influence of preparation method on the catalysts' deNOx efficiency (GHSV of 20,000 h−1).

    • Figure 5. 

      Influence of calcination temperature on the catalysts' deNOx efficiency (GHSV of 20,000 h−1).

    • Figure 6. 

      Influence of Mn loading on the catalysts' deNOx efficiency (GHSV of 20,000 h−1).

    • Catalyst Preparation conditions
      Solvent Loading (wt%) Calcination temperature (°C) Calcination atmosphere
      E-8MnOx/AC-200A Ethanol 8 200 Air
      H-8MnOx/AC-200A Water 8 200 Air
      H-8MnOx/AC-500N Water 8 500 N2
      E-8MnOx/AC-180A Ethanol 8 180 Air
      E-8MnOx/AC-220A Ethanol 8 220 Air
      E-8MnOx/AC-240A Ethanol 8 240 Air
      E-8MnOx/AC-260A Ethanol 1 260 Air
      E-4MnOx/AC-200A Ethanol 4 200 Air
      E-6MnOx/AC-200A Ethanol 6 200 Air
      E-10MnOx/AC-200A Ethanol 10 200 Air
      E-12MnOx/AC-200A Ethanol 12 200 Air

      Table 1. 

      Catalysts' preparation conditions

    • Catalyst SBET
      (m2/g)      		 Vmic
      (cm3/g)      		 Vtot
      (cm3/g)      		 Vmic/Vtot
      (%)      		 Dp
      (nm)
      H-8MnOx/AC-500N 743.6 0.306 0.343 89.2 1.845
      H-8MnOx/AC-200A 686.2 0.297 0.326 91.1 1.900
      E-8MnOx/AC-200A 689.3 0.315 0.342 92.1 1.988

      Table 2. 

      Pore structure parameters of the catalysts