Activated Alumina

CAS NO.: 66402-68-4

Appearance: Beads

Standard Packaging: 25 KG/Plastic bag. 650 KG/Jumbo bag, 150 KG/Steel drum

Delivery Time : 5-7 days

Quality Insurance: National Standard HG/T 3927-2007

20”GP Load : 9-13 Tons      40”GP Load: 18-26 Tons  (Palletized)


Activated alumina

Activated alumina is manufactured from aluminium hydroxide by dehydroxylation it in a way that produces a highly porous material; this material can have a surface area significantly over 200 square metres/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), the same chemical substance assapphire and rubies (but without the impurities that give those gems their color). It has a very high surface-area-to-weight ratio. That means it has a lot of very small pores, almost like tunnels, that run throughout it.

We provide high quality activated alumina adsorbent for defluorination, activated alumina adsorbent for drying, activated alumina for hydrogen peroxide to customers all over the world.


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 gas streams (Claus Catalyst process).


Use 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, and if the alumina desiccant is heated to about 200°C it will release all of the water stored in it. This process is called regenerating the desiccant. Air always has some water in it; one way to measure the amount of water in the air is the air’s dew point.

Fluoride adsorbent

Activated alumina is also widely used to remove fluoride from drinking water. In the US, there are widespread programs to fluoridate drinking water. However, in certain regions, such as the Jaipur region of India, there is enough fluorine in the water to cause fluorosis.

Activated alumina filters can easily reduce fluoride levels from .5 ppm to less than .1 ppm. The amount of fluoride leached from the water being filtered depends on how long the water is actually touching the alumina filter media. Basically, the more alumina in the filter, the less fluoride will be in the final, filtered water. Lower temperature water, and lower pH water (acidic water) are filtered more effectively
Activated alumina, when used as a fluoride filter, can be regenerated by a solution of lye (sodium hydroxide;NaOH), sulfuric acid (H2SO4), or alum (KAl(SO4)2).

Vacuum systems
In high vacuum applications, activated alumina is used as a charge material in foreline traps to prevent oil generated by rotary vane pumps from backstreaming into the system.


Activated   Alumina




KA401 KA402 KA403 KA404 KA405
Crystal Type x-p x-p y y


Chemical Composition

Al2O3 Content (%)

≥93 ≥93 ≥93 ≥93 ≥93

Na2O Content (%)

≤0.3 ≤0.3 ≤0.5 0.15-0.3 ≤0.3

Physical properties

Bulk density (g/ml)

0.68-0.72 0.70-0.75 0.65-0.75 0.70-0.80


Pore volume   (ml/g)

0.30-0.45 0.30-0.42 0.40-0.46 0.40


Surface area (m2/g)

≥300 ≥300 260-300 ≥300


Active (%)

/ / 56-62



Attrition loss   (%)

≤1.0 ≤1.0 ≤1.0 ≤0.4


LOI (%)

≤8 ≤8 ≤8 ≤5


Static absorption (%)













0.2-0.3 50 50-70


Crushing Strength (N/PC)

Φ1-2 (mm)

≥40 ≥40 / /


Φ2-3 (mm)

≥70 ≥70 / / /

Φ3-5 (mm)

≥120 / ≥120 ≥120


Φ4-6 (mm)

≥150 / ≥150 ≥150


Φ5-7 (mm)

≥200 / / /


Φ6-8 (mm)

≥300 / / /


Φ12-14 (mm)

≥350 / / /


KA401: is for as adsorbent
KA402: is for defluorinating
KA403: is for absorption in producing hydrogen perixide (H2O2)
KA404: is for catalyst carrier
KA405: is for dehydrating and drying in air seperation etc.

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