Activated alumina desiccant is a granular adsorption material made from high-purity aluminum oxide. It features a highly porous structure with a large specific surface area and a well-developed network of micro- and mesopores, which provides abundant active sites for moisture adsorption. Due to its strong affinity for water molecules, activated alumina functions as an efficient and reliable desiccant.
Activated alumina desiccant has wide applications in the dehydration and purification of industrial gases and liquids, including compressed air, natural gas, petrochemical streams, and various process gases. And it is also capable of achieving deep drying performance, which makes it especially valuable in applications requiring ultra-dry conditions, such as instrument air systems, electronic manufacturing, and catalyst protection in petrochemical processes.
This excellent performance is mainly attributed to activated alumina’s high chemical stability, uniform particle size distribution, high mechanical strength, low attrition loss, and outstanding resistance to thermal and chemical degradation. And its reversible adsorption capability (or regenerability), enables long service life and repeated reuse without significant loss of performance, makes it economically attractive for continuous industrial operations.
In addition, what is even more commendable is that activated alumina is a environmentally friendly desiccant material. It is non-toxic, odorless, non-pulverizing, and insoluble in water. Therefore, Activated alumina desiccant is suitable for both industrial and environmental applications.
| Crystal Type | X-ρ | ||||||
| Chemical Formula | Al2O3·nH2O | ||||||
| Diameter(mm) | 3-4 | 8-10 | 6-8 | 3-5 | 2-3 | 1.6-2.4 | 1.2-2.0 |
| Bulk Density(g/ml) | ≥0.7 | ≥0.6 | ≥0.7 | ≥0.7 | ≥0.7 | ≥0.7 | ≥0.7 |
| Crush Strength(N) | ≥120 | ≥280 | ≥200 | ≥130 | ≥80 | ≥35 | ≥20 |
| Surface Area(m2/g) | ≥380 | ≥300 | ≥300 | ≥300 | ≥300 | ≥300 | ≥300 |
| Pore Volume(cm3/g) | ≥0.40 | ≥0.38 | ≥0.38 | ≥0.38 | ≥0.38 | ≥0.38 | ≥0.38 |
| Loss on Attrition(%) | ≤0.25 | ≤0.30 | ≤0.30 | ≤0.30 | ≤0.30 | ≤0.30 | ≤0.30 |
| Loss on Ignition(%) | ≤8.0 | ≤8.0 | ≤8.0 | ≤8.0 | ≤8.0 | ≤8.0 | ≤8.0 |
| Static H2O Adsorption(%) | ≥20 | ≥17 | ≥17 | ≥17 | ≥17 | ≥17 | ≥17 |
| Dynamic H2O Adsorption(%) | ≥17 | ||||||
* Petrochemical Liquid And Gas Desiccants
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