Sample

% Fe₂O₃

Fe content (mmol/g)

H₂ consumption (mmol/g)

Total e/Fe

C1

7.39

0.924

1.05

2.27

C2

13.80

1.725

2.59

3.00

C3

9.00

1.125

1.69

3.00

C4

54.50

6.812

8.95

2.63

C5

1.07

0.134

0.18

2.68

MC5

3.88

0.485

0.69

2.84