Physical and chemical characteristics | Zeolites | |
Clinoptilolite | Stilbite | |
SiO2/Al2O3 | 0.53 | 0.09 |
CEC (meq∙g−1) | 2.96 | 2.55 |
pH (water) | 10.0 | 8.4 |
Specific area (m2∙g−1) | 72.2 | 8.8 |
Pore volume (×10−3 cm3∙g−1) | 25.6 | 1.0 |
Pore diameter (Å) | 77.5 | 115.1 |
SiO2 (%) | 71.1 | 62.5 |
Al2O3 (%) | 14.6 | 16.3 |
CaO (%) | 7.3 | 9.5 |
K2O (%) | 2.4 | 2.5 |
SO3 (%) | 1.9 | 2.1 |
Fe2O3 (%) | 2.2 | 6.0 |