China 4A Molecular Sieve adsorbent Suppliers, Quotes
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China 4A Molecular Sieve adsorbent Suppliers, Quotes

China 4A Molecular Sieve adsorbent Suppliers, Quotes

Molecular Sieve type 4A is an alkali alumino silicate; it is the sodium form of the Type A crystal structure. 4A molecular sieve has an effective pore opening of about 4 angstroms (0.4nm). Type 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded.
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Product Description

Technical Specification of 4A Type Molecular Sieve
Model 4A
Color Light gray
Nominal pore diameter 4 angstroms
Shape Sphere Pellet
Diameter (mm) 1.7-2.5 3.0-5.0 1.6 3.2
Size ratio up to grade (%) ≥98 ≥98 ≥96 ≥96
Bulk density (g/ml) ≥0.72 ≥0.70 ≥0.66 ≥0.66
Wear ratio (%) ≤0.20 ≤0.20 ≤0.20 ≤0.20
Crushing strength (N) ≥35/piece ≥85/piece ≥35/piece ≥70/piece
Static H2O adsorption (%) ≥22 ≥22 ≥22 ≥22
Static methanol adsorption(%) ≥15 ≥15 ≥15 ≥15
Water content (%) ≤1.0 ≤1.0 ≤1.0 ≤1.0
Typical chemical formula Na2O . Al2O3. 2SiO2. 4.5 H2O  |  SiO2: Al2O3 ≈ 2
Typical application a) Drying and removing of CO2 from natural gas, LPG, air, inert and atmospheric gases, etc.
b) Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia syn gas treating)
c) Special types are used in the air break units of buses, trucks and locomotives.
d) Packed in small bags, it maybe used simply as a packaging desiccant.
Package Carton box; Carton drum; Steel drum
MOQ 1 Metric Ton
Payment terms T/T; L/C; PayPal; West Union
Warranty a) By National Standard HGT 2524-2010
b) Offer lifetime consultation on problems occurred
Container 20GP 40GP Sample order
Quantity 12MT 24MT < 5kg
Delivery time 3 days 5 days Stock available
Regeneration of 4A Type Molecular Sieve

Molecular sieve Type 4A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes.

To remove moisture from a 3A molecular sieve, a temperature of 200-230°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C.

The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.

Available Sizes & Forms
4A - Zeolites are available in beads of 1-2 mm(10x18 mesh), 2-3 mm(8x12 mesh), 2.5-5 mm(4x8 mesh) and as powder, and in pellet 1.6mm, 3.2mm.
Important Handling Attention
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.
Frequently Asked Questions (FAQ)
What is the pore size of a 4A molecular sieve and what does it adsorb?
Type 4A molecular sieve has an effective pore opening of about 4 angstroms. It is capable of adsorbing molecules such as water, methanol, carbon dioxide, ammonia, and light hydrocarbons.
How can a 4A molecular sieve be regenerated?
It can be regenerated via thermal swing adsorption (TSA) by heating, typically reaching regeneration temperatures up to 200–230°C for moisture removal, or through pressure swing adsorption (PSA) by lowering the system pressure.
What primary industrial applications use 4A molecular sieves?
Typical applications include dehydration and CO2 removal from natural gas, LPG, and inert gases, ammonia syn gas processing, brake air systems for transport vehicles, and closed-packaging desiccant pouches.
What are the available shapes and mesh sizes?
4A zeolites are available in spherical bead shapes (1.7–2.5 mm, 3.0–5.0 mm), extruded pellets (1.6 mm, 3.2 mm), and powder form.
What storage and handling precautions should be observed?
To avoid dampness and pre-adsorption of organic vapors prior to commissioning, the product must be kept tightly sealed in original packaging; otherwise, thermal reactivation will be required before use.
What are the standard packaging and minimum order quantities?
Standard packaging includes carton boxes, carton drums, and steel drums. The standard minimum order quantity (MOQ) is 1 Metric Ton, with samples available under 5 kg.

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