Table 5.
Physicochemical properties of porous materials.
| Materials | Molecular Sieve a | Macroporous Resin (HP 20) a |
Diatomite a |
|---|---|---|---|
| Chemical composition | 3/4CaO·1/4Na2O·Al2O3· 2SiO2·9/2H2O |
Polystyrene benzene | SiO2 (>85%) |
| Particle size (µm) | 2.5 | 420–840 (20–40 mesh) | 590 (30 mesh) |
| Unit surface area (m2 g−1) | 300–1000 | 500−600 | 40–65 |
| Pore size (nm) | 2–50 | 46 | NA |
| Moisture content (%) | <2 | 45–60 | 0.11 |
| Density (g cm−3) | 0.64 | 1.05–1.09 | 0.47 |
| Functional groups | OH− | OH−/H+ | OH− |
| Hydrophobic/hydrophilic | Hydrophilic | Hydrophilic | Hydrophilic |
a Data were obtained from manufacturers; NA: not available.