Inert gases, also known as noble gases, are widely used in various real-life applications due to their unreactive nature.
5 Key Applications of Inert Gases in Real Life
1. Preservation of Historical Documents
Inert gases are crucial for preserving delicate historical documents. For instance, the original U.S. Constitution is stored under humidified argon to prevent degradation. Argon is preferred over helium in such applications because it does not diffuse out of the storage case as quickly, ensuring a stable environment for the documents.
2. Chemical Industry Applications
In the chemical industry, inert gases play a significant role in conducting reactions safely. They are used to create an environment where fire hazards and unwanted reactions are minimized. For example, in chemical manufacturing plants and oil refineries, transfer lines and vessels are purged with inert gases to prevent fires and explosions. Additionally, chemists use inert gases to handle air-sensitive compounds, ensuring that these compounds do not react with air during experiments.
3. Food Packaging
Inert gases are also used in food packaging to extend the shelf life of products. By removing oxygen and replacing it with an inert gas, the growth of bacteria is inhibited, and chemical oxidation is prevented. This is particularly important in the packaging of edible oils, where oxidation can lead to rancidity. Unlike active preservatives, inert gases act as a passive preservative, maintaining the freshness of the food without introducing additional chemicals.
4. Metalworking and Manufacturing
In metalworking, particularly in the hot processing of reactive metals like welding or casting, inert gases are essential to prevent the metal from reacting with oxygen or nitrogen in the air, which could degrade the material's properties. Similarly, in additive manufacturing of metal components, an inert gas atmosphere is used to ensure the integrity of the final product.
5. Specialized Applications
For specialized applications, inert gases are produced on-site using specialized generators. These are particularly useful in industries like chemical tankers and product carriers, as well as in laboratories where benchtop generators provide a controlled environment for experiments.
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