Table 6: BET results for different molar ratios of Fe/Mn.

Fe/MnSpecific surface area ( /g)
PrecursorCalcined catalyst (before reaction)Calcined catalyst (after reaction)

1/0 65.1 62.7 59.3
4/1 71.2 68.2 66.4
2/1 98.1 96.7 84.3
1/1 107.9 98.6 95.6
1/2 109.8 104.7 102.1
1/4 111.3 108.9 106.1
0/1 110.8 107.9 105.6