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[Chemical Knowledge]：Properties and Uses of Krypton Gas

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Krypton is a rare inert gas with many unique properties and uses, especially in the field of chemical production raw materials play an important role. This paper will detail the properties of krypton, production methods, purification technology, safety and application in the production of different chemicals.

1. the nature of krypton

krypton is a colorless, odorless, non-toxic inert gas with an atomic number of 36, which belongs to the rare gas element in the periodic table. Krypton is chemically very stable and difficult to react with other elements, so it is widely used as a protective gas. In addition, krypton has excellent luminescence properties and has a wide range of applications in the field of lighting and display. The production method of

2. krypton

krypton is mainly obtained by fractionating liquid air. In the air contains a trace of krypton, krypton can be separated from the air by cryogenic separation. First, the air is cooled below the liquefaction point, so that the water, carbon dioxide and other impurities in it are condensed into a solid, and then the krypton gas is separated by fractionation.

3. Krypton Purification Technology

Since the krypton gas separated from the air contains certain impurities, it needs to be purified. Commonly used purification methods include adsorption, catalytic oxidation and condensation. Among them, the adsorption method is to use the adsorption of the adsorbent to remove the impurities in the krypton gas; the catalytic oxidation method is to use the catalyst to oxidize the impurities in the krypton gas into a compound that is easy to remove; the condensation method is to condense the impurities in the krypton gas into a solid by cooling, thereby removing it. The safety
of

4. krypton
krypton itself is non-toxic and harmless, but it is necessary to pay attention to safety during use. Because the density of krypton gas is larger than that of air, it is necessary to pay attention to ventilation when using krypton gas in a closed space to avoid the danger of suffocation. In addition, in the process of using krypton gas, it is necessary to comply with relevant safety operating procedures to ensure safe use.

5. application of krypton in chemical production

1. protective gas: due to the chemical properties of krypton is very stable, not easy to react with other substances, it is often used as a protective gas. In chemical production, krypton can be used to protect some air-sensitive substances from oxidation or pollution.
2. Luminescent materials: Krypton has excellent luminescence properties and is widely used in lighting and display fields. For example, krypton gas is used in the manufacture of light-emitting devices such as fluorescent lamps and neon lamps, and in the field of display screens and the like.
3. Gas lasers: Krypton is also widely used in gas lasers. The laser radiation generated by the transition between krypton atomic energy levels can achieve high-efficiency and high-power laser output, and is widely used in scientific research, processing and manufacturing.

In short, krypton, as a rare inert gas, has many unique properties and uses, especially in the field of chemical production raw materials play an important role. Through the in-depth understanding of the properties, production methods, purification technology, safety and application in the production of different chemicals, we can better play the role of krypton and promote the sustainable development of the chemical industry.

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