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aluminium oxide decomposition occurs in a variety of processes, ranging from simple chemical reactions to complex industrial processes. These reactions can occur due to many different factors including heat, pressure, electricity, or shock.
The reaction of aluminium with atmospheric oxygen results in a thin passivation layer that forms on the surface of metallic aluminium within a matter of picoseconds. This layer protects the metal from further oxidation and makes it more resistant to weathering.
This property of aluminium oxide is important in many alloys, and the process for enhancing this passivation is known as anodising. This process is used to improve the hardness and corrosion resistance of a wide range of materials, from car parts to aerospace components.
Aluminum oxide is a useful catalyst for a number of industrial reactions, such as the Claus process for converting hydrogen sulfide waste gases into elemental sulfur in refineries. It also has a role in the dehydration of alcohols to alkenes.
In addition to its industrial uses, aluminium oxide is also a popular ingredient in glass and plastics. It is often found as a filler in many products, particularly for plastics that have low melting points and need a high level of strength.
It is common for commercially available alumina to contain alkaline residues that were left behind during the extraction of bauxite. These contaminants can significantly affect the ozone decomposition process as they may cause pH changes in water after the introduction of the alumina catalyst.
