About Molecular sieve
Definition of Molecular sieve
  Molecular sieve is also called synthesized zeolite, which has a crystal framework with a high Si/Al ratio, and it is usually manufactured from kaolin as the raw material by several treating processes and palletizing or sintering after. The molecular sieve has the characters of adsorption, dryness, separation and so on. Which have been widely applied in a wide range of chemical engineering processes such as reaction and absorption, dryness, dehydration, air separation process and etc.. It has a great ability of sieving adsorbate molecules because of its alveolate microcosmic surface, so it is called Molecular sieve.

Development of Molecular sieve
  As a new material with good abilities of adsorption and separation, it has gained great development since it’s finding in the middle of last century. The universality and speciality have also been greatly enhanced.

     
Characteristic of Molecular sieves
1. Great ability of selective adsorption.
  Let’s take 3A molecular sieve as an example. It adsorbs water exclusively, no nitrogen, oxygen, or carbon dioxide.
2. High adsorption capability
  It has high appetency for molecule with high polarity such as H2O and CO2,  H2O in particular. It can keep adsorption capability in severe conditions such as low partial pressure (or concentration) and high temperature
3. Environment friendly.
  Decomposable.