Table 3: Surface properties of natural and modified kaolinites.

Samples
(m2·g−1)
Total pore volume
(cm3·g−1)
Average pore diameter
(nm)
Total acidity
(m·equiv·g−1)

K19.10.007515.655.1
AHK39.90.018318.365.3
HK13.90.005916.974.9
HAK56.090.017112.233.0