Table 4. Comparison of the Surface Properties of PB (Prepared at 80 °C) from Previous Reports and Our Results.
| methods | specific surface area (m2 g–1) | pore volume (cm3 g–1) | pore diameter (nm) | references | 
|---|---|---|---|---|
| reaction-crystallization | 342 | 0.53 | 3 | (53) | 
| hydrothermal synthesis | 225.4 | 0.4 | 3.5 | (54) | 
| sol–gel | 264.6 | 0.47 | 2.13 | (55) | 
| hydrothermal synthesis (with Brij 56 as a surfactant) | 381 | 0.6 | 3 | (56) | 
| precipitation method with three kinds of surfactants (CTAB/TritonX-100/AOT) | 297.3 | 0.41 | 5.2 | (49) | 
| 296.8 | 0.40 | 5.4 | ||
| 296.3 | 0.36 | 4.1 | ||
| sol–gel | 231 | 0.28 | 4.52 | (57) | 
| hydrolysis of aluminum alkoxide | 244.5 | 0.38 | 4.92 | SB (Sasol) | 
| reaction of Al-H2O | 332.7 | 0.3 | 3.6 | this study (PB) |