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TOPIC: Nitrogen Generation System of Molecular Sieve

Nitrogen Generation System of Molecular Sieve 8 months 2 weeks ago #297

  • kaolijack
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Molecular sieve is a cubic aluminosilicate compound with cubic lattice. Molecular sieve has a uniform microporous structure, its pore size uniform size, these holes can be smaller than the diameter of the molecules adsorbed to the inside of the cavity, and polar molecules and unsaturated molecules have a preferential adsorption capacity, which can pole Different degrees of saturation, different degrees of different molecular size and different boiling point of the molecules separated, that is, Nitrogen Generation System with the "screening" the role of molecules, so called molecular sieve. Because molecular sieves have the advantages of high adsorption capacity, strong thermal stability and other adsorbents, the molecular sieve is widely used.

In the field of biological macromolecules, there are common bio-rad SEC molecular sieve pre-packed columns.

US scientists have found that by adjusting the temperature, can accurately control a titanium silicate material in the hole size, to create a sophisticated new molecular sieve. Some crystalline materials have a large number of uniform micropores inside, smaller than the pores of the molecules can pass through, and macromolecules can not pass, so you can play the role of separation of different molecules, such materials are known as molecular sieve.

When the temperature rises, ETS-4 will gradually dehydrate, the size of the pores will be reduced. With this method, the pore size can be finely adjusted in the range of 3 to 4 angstroms (1 angstrom equal to one billionth of a meter). Scientists say that some common molecules such as nitrogen, methane, oxygen, argon and water molecules are all about 3 to 4 angstroms, and the size of each other is almost the same, and molecular sieves made with ETS-4 can effectively separate them. Researchers have tried to reduce the nitrogen content from 18% to less than 5% from the nitrogen and methane mixtures with ETS-4 and have succeeded in the experiment PSA Nitrogen Generators of separating argon with oxygen, nitrogen and oxygen. It is believed that this technology will have an important commercial application prospects.
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