Activated alumina catalyst carrier refers to white powder or formed alumina solid, which is the most widely used catalyst support. Strip and spherical alumina are mostly used as catalyst support in fixed bed reactor, and microsphere alumina support is mostly used in fluidized bed reactor.
Activated alumina carriers could be produced in various morphology, strength, crystalline shape, specific surface area, pore volume, pore size distribution, surface acid and base strength. Such as spherical, columnar and bar shaped, with strength 10-200 N/pc. The crystalline form are alumina trihydrate, alumina hydrate, p, y, X, and a. lt is widely used in the production of catalysts by iso-impregnation and over-impregnation methods. The loaded precious metals gold, silver, platinum, palladium, rhodium, iridium, transition metals iron, manganese, copper, zinc, etc. can be highly dispersed on the carriers.
| Crystal Type | X, ρ, γ, α | |||
| Chemical Formula | Al2O3·nH2O | |||
| Diameter(mm) | 4-6 | 3-5 | 1.5-3 | 1-3 |
| Bulk Density(g/ml) | ≥0.7 | ≥0.7 | ≥0.7 | ≥0.7 |
| Surface Area(m2/g) | ≥300 | ≥300 | ≥300 | ≥300 |
| Pore Volume(cm3/g) | ≥0.38 | ≥0.38 | ≥0.38 | ≥0.38 |
| Crush Strength(N) | ≥150 | ≥120 | ≥50 | ≥50 |
| Wear Ratio(%) | ≤0.60 | ≤0.60 | ≤0.60 | ≤0.60 |
