1.Type A molecular sieves are divided into three types according to the composition: silicoaluminate, alkali metal aluminate and modified molecular sieves; and according to the manufacturing method, they are divided into two types: synthetic molecular sieves and natural molecular sieves.

2.3A molecular sieve is a kind of alkali metal silica-aluminate with 3 A-type pore size, sometimes, it is also called 3A zeolite molecular sieve.

3.4A molecular sieve is a silica-aluminate with 4 A-type pore sizes, which is mainly used for adsorption and separation of molecules from 4A zeolite.

4.10X molecular sieve is a synthetic aluminium silicate with high selectivity for adsorption and separation of substances with different molecular sizes.

5.13X molecular sieve is a kind of aluminosilicate with high selectivity, which can adsorb and separate substances with different molecular sizes.

6. 13X-HP molecular sieve for oxygen production is a kind of high-efficiency and high-purity molecular sieve, which can be used to separate oxygen and nitrogen from air.

7.13X molecular sieve for air separation is a special molecular sieve used to improve the adsorption capacity of carbon dioxide and water in the process of deep-cooling air separation and avoid the phenomenon of frozen tower.

8.Carbon molecular sieve is a new type of air separation equipment, which can be used to separate oxygen and nitrogen.

9.Lithium molecular sieve is a specific molecular sieve, which can be used to adsorb and separate lithium ion.

10.Zeolite honeycomb molecular sieve is a kind of high-efficiency and renewable adsorbent, which is used for treating organic waste gas with low concentration and large air volume

Strip molecular sieve is a silica-aluminate molecular sieve with high efficiency adsorption and separation function.

11.Hollow glass molecular sieves are aluminosilicate mineral pellets used for drying hollow glass.

 12.Synthetic molecular sieve

 According to the production process is divided into synthetic natural zeolite, synthetic pure zeolite, synthetic ion exchanger and synthetic silica-aluminium gel. Synthetic natural zeolite pore size is variable, pore size and preparation of the synthetic conditions related to the preparation of the pore size; synthetic pure zeolite pore size and preparation of different cations and changes; synthetic ion exchanger with special functional groups; synthetic silica-aluminium gum can be processed into a powder, spherical or columnar, its stability is good, at about 80 ℃, it can be absorbed from the water and a variety of acidic gases, almost all of the one-membered or multiple alkyl, aryl, cycloalkyl and cyclic hydrocarbons.

13.Natural molecular sieve

14.Natural molecular sieves are mixtures of various inorganic hydrous silica-alumina salts with a stable tetrahedral structure and many different sized pores to adsorb molecules of different sizes. According to iupac, this type of adsorption is referred to as a molecular sieve when the pore size is approximately twice the diameter of the molecule. Therefore, natural zeolite is a natural molecular sieve. The main varieties of natural zeolite are calcium zeolite, sodium zeolite and mercerised zeolite.

 15.Molecular sieves can be divided into two types, industrial grade and catalyst grade, according to their use. Industrial grade molecular sieves are mainly used to separate and purify gas or liquid mixtures; catalyst grade molecular sieves are mainly used in petroleum catalytic cracking and other catalytic reaction processes.