Calcination Temperature ˚C

Surface Area, m²/g

Direct Calcination

Gradual Calcination

Direct Calcination under Nitrogen

Gradual Calcination

under Nitrogen

0

1.2

150

2.13

2.46

1.14

1.52

200

11.29

2.29

1.70

1.32

250

10.50

5.49

11.01

7.58

300

17.56

16.24

16.20

15.09

350

20.60

17.78

21.50

21.63