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Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 m²/g. The compound is used as a desiccant (to keep things dry by absorbing water from the air) and as a filter of fluoride, arsenic and selenium in drinking water. It is made of aluminium oxide (alumina; Al2O3). It has a very high surface-area-to-weight ratio, due to the many "tunnel like" pores that it has. Activated alumina in its phase composition can be represented only by metastable forms (gamma-Al2O3 etc.).
Catalyst applications
Activated alumina is used for a wide range of adsorbent and catalyst applications including the adsorption of catalysts in polyethylene production, in hydrogen peroxide production, as a selective adsorbent for many chemicals including arsenic, fluoride, in sulfur removal from fluid streams (Claus Catalyst process).
Desiccant
Used as a desiccant, it works by a process called adsorption. The water in the air actually sticks to the alumina itself in between the tiny passages as the air passes through them. The water molecules become trapped so that the air is dried out as it passes through the filter. This process is reversible. If the alumina desiccant is heated to ~200 °C, it will release the trapped water. This process is called regenerating the desiccant.
Fluoride adsorbent
Activated alumina is also widely used to remove fluoride from drinking water.
Specification
| Item | BET m2/g | Pore volume ml/g | Bulk Density g/ml | crushing strength N/p | Partical Size mm |
| AT-DF-1 | ≥320 | ≥0.4 | ≤0.65 | ≥60 | φ1-3 |
| AT-DF-1 | ≥320 | ≥0.4 | ≤0.65 | ≥100 | φ2-4 |
FAQ
Q: Are you factory?
A: Yes. sure
Q: Can you supply free samples?
A: 1kgs free sample is available, but freight charges will be at your account, The charges will be
return to you or deduct from your order in the future.
Q: What about the payment?
100% T/T in advance, 30% T/T in advance, the balance 70% against the B/L copy, Irrevocable
L/C at sight
Q: The MOQ is?
A: MOQ is usually 1 ton, special products can be coordinated with each other.
Q: Can I visit your factory?
A: Yes, we welcome you to visit our factory at anytime
Q: How about your delivery time?
A: Usually the shipment is within 15 days after confirming receipt of your payment, some
products maybe need longer time.
