Porous materials are widely used in many fields, such as microporous molecular sieve, as the main catalytic material, adsorption separation material and ion exchange material, plays a more and more important role in petroleum processing, petrochemical industry, fine chemical industry and daily chemical industry.
Molecular sieve (also known as synthetic zeolite) is a kind of silicoaluminate microporous crystal. It is a basic skeleton structure composed of silicon oxygen and aluminum oxygen tetrahedrons. There are metal cations (such as Na +, K +, Ca2 +, Li +) in the lattice to balance the excess negative charge in the crystal. The types of molecular sieves are mainly divided into a type, X type, Y type, etc. according to their crystal structure.
