Aluminum oxide active

Active alumina (often called active alumina) is one of the key materials in the modern chemical and petrochemical industry. Obtained as a result of thermal dehydration of aluminum hydroxide, it is characterized by a high specific surface coverage, which makes it effective for the processes of adsorption, catalysis and drying of liquids.

Chemical structure and synthesis

The basic chemical formula of aluminum oxide is as follows:

Al2​O3​.

Active alumina is obtained by:

• Intermediate phase transformation of aluminum hydroxide into oxide,

• Subsequent heat treatment under controlled conditions to form a porous structure (most often in the form of a gamma capsule).

Physico-chemical properties

• Porosity and specific surface area: High porosity and large surface area ensure excellent adsorption capacity.

• Heat resistance: It is stable at high temperatures, which allows it to be used in aggressive technological processes.

• Chemical inertia: It has both acidic and basic properties, which makes it versatile for various catalytic processes.

• Release form: It is usually available in powder or granule form for ease of use in process installations.

Application

• Adsorbents: They are used for cleaning liquids and gases, removing moisture and other impurities.

• Catalytic carriers: They are used as a base for placing active catalysts in reactors.

• Desiccants: Widely used in air and liquid dehumidification systems, as well as for drying natural and synthetic resin systems.

Conclusion

Active aluminum oxide is an indispensable technological material due to its outstanding adsorption and catalytic properties. Its application covers a wide range of industries from petrochemical processing to finishing products in the food and pharmaceutical industries.