1) What are molecular sieves?
Molecular sieves are zeolites. Zeolites are crystalline three dimensional aluminosilicates with cavities inside the crystal lattice. These cavities are connected by channels, the so called pores. The pores have an exact defined diameter which is the most important parameter for the application of zeolites. That means just molecules having a diameter smaller than the diameter of the pores reaching the cavities. Thereby an accurate separation (selectivity, molecular sieve effect) between absorbable and non-absorbable molecules is possible.
2) Various Grade and Sizes Available:
According to their pore Grade like: 3A, 4A, 5A and 13X is available in Beads and Pellets Forms.
3) Whether the Molecular Sieve can be regenerated or not?
Yes you can regenerate. There are some methods of Regeneration of Molecular Sieve include pressure change, heating and purging with a carrier gas or vacuum Pressure Swing Adsorption. Regeneration temperatures depend on Molecular Sieve type.
4) What is the life of Molecular Sieves?
Life of Molecular Sieves is around 5-6 years.However, Molecular Sieves life is reduced by oil and any other impurities in air. Therefore, it is essential to provide special pre-filters if lubricated air is used.

5) What is the difference between the various molecular sieves? How to select the Molecular Sieve properly?

  • The main difference between them is pore size. The nominal pore sizes for 3A, 4A, 5A and 13X are 0.3, 0.4 and 0.5 nanometers, respectively.
  • 3A is mainly applied to absorb water molecules in drying natural gas and oil gases, especially in drying Catalytic Splitting Decomposition Oil gases and Alkenes.
  • 4A is mainly used to make static dehydration in airtight gas or liquid system. In addition, it can remove the molecules of ethyl alcohol, hydrogen sulfide, carbon dioxide, and ethylene.
  • 5A is mainly applied to separate isomerism alkanes. Meanwhile, it can also absorb the molecules which can pass through in 3A and 4A molecular sieve and whose diameters are less than 0.5 nm.
  • All molecules which can be absorbed on Molecular Sieve Type 3A, 4A, and 5A can be absorbed on Type 13X. In addition, Type 13X can absorb molecules of larger critical diameters, such as aromatics and branched-chain hydrocarbons.
6) How do I get a Material Safety Data Sheet for the active ingredients in your products?
You can download the Material Safety Data Sheets (MSDS) from our web site

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