Fischer-Tropsch Synthesis over Iron Manganese Catalysts: Effect of Preparation and Operating Conditions on Catalyst Performance

Table 3

BET results for catalysts containing 50%Fe/50%Mn with different aging times.

	Specific surface area (m^2/g)
Aging time (minute)	Precursor	Calcined catalyst (before reaction)	Calcined catalyst (after reaction)
0	85.0	82.3	79.1
30	89.3	84.2	80.5
60	93.2	86.6	82.7
120	107.9	98.6	95.6
180	115.8	113.1	109.5
300	119.0	115.6	112.9