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4A Zeolite Molecular Sieve

1.4A Zeolite molecular sieve is a crystalline metal silicoaluminate which has been activated for adsorption by removing its hydrated water.
2.A highly porous adsorbent is formed during the dehydration process.
3.The system of pores and cavities with it(usually 0.3-2.0 nm) has the characteristics of sieving molecules

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Product Introduction

4A Zeolite Molecular Sieve is crystalline silicates or aluminosilicates, which is formed by connecting silicon-oxygen surrounding bodies or aluminum-oxygen surrounding bodies through oxygen bridge bonds. The system of pores and cavities with molecular size (usually 0.3-2.0 nm) has the characteristics of sieving molecules. However, with the deepening of its synthesis and application research, researchers have discovered aluminophosphate molecular sieves, and the framework elements (silicon or aluminum or phosphorus) of it can also be composed of B, Ga, Fe, Cr, Ge, Ti, V , Mn, Co, Zn, Be and Cu are substituted, and the size of the channels and cavities can reach more than 2 nm. Therefore, zeolite molecular sieves can be divided into silicon-aluminum kind, phosphorus-aluminum kind and framework heteroatom kind according to the composition of framework elements. According to the pore size, molecular sieves with a pore size smaller than 2 nm, 2-50 nm and larger than 50 nm are called micropore, mesopore and macropore kind, respectively. Due to its large pore size, it becomes a good carrier for the reaction of large-sized molecules. However, the pore walls of mesoporous materials are amorphous, so that their hydrothermal stability and thermal stability cannot meet the harsh conditions required for petrochemical applications.

Techmical Index:

Item	Unit	Specification
Sphere Size	mm	1.8-2.5	3.0-5.0
Bulk Density	g/ml	≥0.67	≥0.65
Qualified Size	%	≥98	≥98
Static Absorptive Water	%	≥26.5	≥26.5
CO2 Absorptive Capacity	ml/g	≥17.5	≥17.5
Crush Resistance	N	≥35	≥80
Abrasion Loss	wt%	≤0.2	≤0.2
Packing Moisture Content	%	≤1.5	≤1.5

Advantage

1.4A Zeolite Molecular Sieve is highly absorbent, allowing only molecules with diameters smaller than the pore size to enter, while the other two are not uniform pore size.

2.High efficiency adsorption capacity. In the process of adsorption, the relative adsorption humidity of natural gas decreases gradually with the continuous progress of adsorption. Only the molecular sieve will remain stable with a high equilibrium adsorption capacity, so the molecular sieve is often used for deep dehydration.

3.Long service life. Because of its selective adsorbability, it can avoid the inactivation of adsorbents due to the co-adsorption of heavy hydrocarbons.