3A Molecular Sieve Pellets for Ethanol Dehydration, Low Dust, High Efficiency

Product Description

Product Description

3A Molecular Sieve: Key Features and Applications

1. Chemical Composition & Structure

Formula:

2/3K₂O⋅1/3Na₂O⋅Al₂O₃⋅2SiO₂⋅9/2H₂O

Uniform pore size: 3 A (0.3 nm), selectively adsorbs H₂O and small polar molecules (e.g., NH₃), while excluding larger molecules (e.g., ethane).
Thermal stability: Regenerable at 350°C; complete moisture release at 650°C.

Major Applications
Industrial DryingDeep dehydration of natural gas, ethylene/propylene, and liquid ethanol (dew point < -70°C).
Prevents ice formation in pipelines and improves fuel purity.
Insulated GlassDesiccant for spacer layers, complying with EN1279 standards (no fogging at -40°C to 70°C).
Electronics & CoatingsMoisture protection for IC packaging.
Additive in resins/coatings (activated powder form) to prevent bubbling.

Product Parameters

Model	3A Molecular Sieve(More Types Paramenter Needs Please Contact Us)
Color	White grey
Nominal pore diameter	3 angstroms
Shape	Sphere		Pellet
Diameter	1.6-2.5 (mm)	3.0-5.0 (mm)	1.6 (mm)	3.2 (mm)
	8*12 (mesh)	4*8 (mesh)	1/16 (inch)	1/8 (inch)
Bulk density (g/ml)	≥0.70	≥0.70	≥0.68	≥0.68
Crushing strength (N/PC)	≥35.0	≥100.0	≥35.0	≥50.0
Size ratio up to grade (%)	≥98.0	≥98.0	≥98.0	≥98.0
Dynamic H2O adsorption (%)	≥20.0	≥20.0	≥20.0	≥20.0
Static H2O adsorption (%)	≥21.0	≥21.0	≥21.0	≥21.0
Static C2H4 adsorption (mg/g)	≤3.0	≤3.0	≤3.0	≤3.0
H2O content (%)	≤1.5	≤1.5	≤1.5	≤1.5
Wear ratio (%)	≤0.25	≤0.25	≤0.20	≤0.20

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