Activated Alumina

Activated Alumina is a ceramic compound used as a desiccant. It is a very permeable form of aluminum oxide. It has a very high surface-area-to-weight ratio, due to the many “tunnel like” pores that it has (350m²/g). Unlike other desiccants, Activated Alumina adsorbs contaminants in liquids and gases without any change in form i.e. it will not soften or disintegrate when immersed in liquids.

  • Drying of gases and liquids
  • absorption in producing hydrogen peroxide (H2O2)
  • Catalyst carrier – f.e. for recovering sulfur in the petrochemical industry.
  • Dehydrating and drying in air separation etc.
  • Acid removal. Reclaiming agent for de-acidic in transformer oil, and de-arsenic agent in the Acid industry.
  • Excellent defluorination agent for drinking water and for recycling alkyl-hydrocarbon in alkylbenzee production.
  • Desiccator and purifying agent.
  • Hydrocarbon adsorption.

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Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material. 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 as sapphire and ruby (but without the impurities that give those gems their color).

  • High adsorption capacity
  • Low abrasion
  • Resists slugs of liquid water
  • High crush strength
  • Uniform bead sizes