| Properties | Value |
| Na2O (wt%) | 0.16 |
| Re2O3 (wt%) | 5.8 |
| Specific area (m2∙g−1) | 261 |
| Pore volume (mL∙g−1) | 0.38 |
| Apparent density (g∙cm−3) | 0.74 |
| Micro-activity (800˚C for 4 h) (%) | 83 |