Boehmite
Boehmite is an important precursor for the preparation of γ-Al2O3 and α-Al2O3，mainly used in catalyst and its carrier materials,coating material,porous mambranes and soft abrasive,high temperature ceramics etc.
Boehmite application
Boehmite chemical compositioin
| Chemical composition % | ||
| Fe2O3 | ≤0.06 | |
| Na2O | ≤0.30 | |
| SiO2 | ≤0.15 | |
| L.O.I (%) | 33-38 | |
| Moisture | ≤0.3 | |
| Physical performance | ||
| D50(um) | 20-30 | |
| BET (㎡/g) | ≥350 | |
| Bulk density(g/cm3) | ≥0.56 | |
| β-AI(OH)3 (%,XRD) | ≥90 | |
| Phase transformation | ||
| 320℃ | H-β-90 → η-AI2O3 | |
| 900℃ | η-AI2O3 → θ- AI2O3 | |
| 1150℃ | θ- AI2O3 → α- AI2O3 | |
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