Gamma-alumina microspheres/balls

Gamma-alumina microspheres/balls

Compared to other form（e.g., Powders, Granules）or different crystal form(such as α-Al₂O₃) alumina-based catalyst carriers, it has unique structure and performance advantages.

3.Process & Engineering Advantages
– Scalable Production:
Spray drying directly converts sols into microspheres, bypassing complex shaping steps (e.g., extrusion, pressing).
– Uniform Loading:
Homogeneous pore distribution enables efficient impregnation of active components (e.g., metal nanoparticles), avoiding aggregation issues in powder carriers.
– Low Bed Pressure Drop:
Spherical particles enable uniform packing in fixed-bed reactors, reducing pressure drop compared to irregular granules, suitable for continuous-flow systems.

4.Application-Specific Advantages
| Application | Advantages of γ-Al₂O₃ Microspheres | Limitations of Other Carriers |
|—————————-|—————————————-|—————————————————|
| Hydrodesulfurization (HDS) | High surface area for Co-Mo active phase loading | α-Al₂O₃ lacks sufficient surface area |
| Automotive Exhaust Purification| Mesopores enhance NOx/CeO₂ dispersion | Powders suffer from airflow-induced erosion |
| Drying & Adsorption | Easy regeneration, low flow resistance | Bulk alumina exhibits poor mass transfer efficiency |
| Biomass Catalytic Conversion| Acidic sites promote sugar dehydration | Amorphous Al₂O₃ has poor thermal stability |