Calcined Active α-Alumina Microspheres
High-temperature stable microspheres for FCC and supports
Calcined alpha-alumina microspheres combining high-temperature stability with active surface for demanding processes.
Product Overview
Calcined active α-alumina microspheres bridge the gap between inert alpha alumina and active gamma alumina. The controlled calcination converts the structure toward the stable alpha phase while retaining a useful level of surface activity, providing a carrier that survives high-temperature regenerators yet still anchors active metals effectively.
These microspheres are used in FCC catalyst formulations, high-temperature gas cleanup and as attrition-resistant components in fluidized processes where thermal stability and mechanical integrity are paramount.
Key Features
- Stable to 1200°C+ service temperature
- Retains useful surface activity after calcination
- Spherical microspheres resist fluidized-bed attrition
- Low sodium for thermal stability
- Ideal FCC additive carrier
Technical Specifications
| Al₂O₃ content | ≥ 99% |
|---|---|
| α-phase conversion | 80-95% |
| Surface area | 20-80 m²/g |
| Attrition index | ≤ 5% |
| Particle size | 20-80 μm (fluidized grade) |
Applications
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