What is the difference between the various molecular sieves? How to select the Molecular Sieve properly?
For the removal of water from gases, there is little difference between 3A, 4A, and 5A. For example, the equilibrium adsorbed water capacities for these three types of molecular sieves are 20%, 20.5 or 21.5%, and 20%, respectively. Therefore, for drying air, any one of them, or their mixture in any proportion, will work in the same manner. The main difference between them is pore size. The nominal pore sizes for 3A, 4A, 5A and 13 X are .3, .4 and .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
