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Molecular sieves

Molecular Sieves 5A

5A molecular sieve refers to calcium A type silicon aluminate.  5A molecular sieve can adsorb molecules whose critical diameter is not greater than 5A. Any molecules that can be adsorbed by 3A and 4A molecular sieve, can be adsorbed by 5A type.
Molecular Sieves 5A Properties
What is Molecular Sieves 5A ?

5A molecular sieve is a synthetic solid acid catalyst with a unique cage structure, which allows the pore to adjust its size to a specific limit and allows only molecules or ions with the specified size that are of a certain size to move through. Because of its high activity, selectivity, and stability is widely used in various chemical reactions and separation processes.
The 5A molecular sieve has the chemical formula Na12Al12SiO24, also known as twelve-ring aluminosilicates. Its crystal structure consists of a three-dimensional grid in which ions of silicon, aluminum, and sodium alternately occupy specific positions in the grid. These grids have a special open structure that allows molecules to enter and leave through screening pores. The 5A molecular sieve is named because it can adsorb and separate molecules with A molecular size of 5A in its application process.
5A molecular sieves have some unique properties. First, it is highly thermally stable and can preserve its structural integrity even at temperatures up to 150 degrees C. Secondly, it is a solid acid catalyst with a high acidity, which allows it to promote a variety of acid-catalyzed reactions, such as isomerization, cracking, polymerization, etc. In addition, 5A molecular sieves also have high hydrothermal stability and can remain active in aqueous solutions.

TRUNNANO is a trusted global supplier of Molecular Sieves 5AFeel free to send an inquiry to get the latest priceif you would like to buy in bulk.

Technical Parameter of Molecular Sieves 5A:
Item Type Unit Spherical Bar Note
Diameter mm 1.6-2.5 3-5 1/16’’ 1/8’’ -
Static H₂O Adsorption %wt ≥22 ≥22 ≥22 ≥22 RH75%, 25℃
%wt ≥21 ≥21 ≥20.5 ≥20.5 RH75%, 35℃
Bulk Density g/ml ≥0.70 ≥0.68 ≥0.64 ≥0.64 Tapped
Static N-hexane Adsorption % ≥12.5 ≥12.5 ≥12 ≥12 BET, 0℃, 36mmHg
Crush Strength N ≥30 ≥80 ≥30 ≥80 Average 25 beads
Loss on Attrition %wt ≤0.1 ≤0.1 ≤0.2 ≤0.3 -
RSD of Crush Strength - ≤0.3 ≤0.3 ≤0.3 ≤0.3 -
Particle Ratio % ≥97 ≥98 ≥98 ≥94 -
Package Moisture %wt ≤1.5 ≤1.5 ≤1.5 ≤1.5 575℃, 1hr

Applications of Molecular Sieves 5A:

Petroleum industry: 5A molecular sieve is an important catalyst and adsorbent in the petroleum industry. It can be used in isomerization, cracking, polymerization, and other reactions to improve the quality and yield of petroleum products. For example, in the production of gasoline, a 5A molecular sieve can be used to increase the number of gasoline and improve the combustion efficiency of gasoline. In addition, it can also be used in the production and processing of lubricating oil to improve the performance and quality of lubricating oil.

Chemical industry: 5A molecular sieves can be used in the chemical industry to produce various chemicals, such as alcohols, ketones, aldehydes, carboxylic acids, etc. By controlling the pore size and acidity of the molecular sieve, the shape selection catalysis of chemical reactions can be realized, and the efficiency of the reaction and the purity of the product can be improved. In addition, 5A molecular sieves can also be used to produce high-purity gases and liquids and separate and purify various organic compounds.

Environmental protection: 5A molecular sieves can be employed for the extraction and purification process of gases as well as liquids within the field of environmental protection. For example, it can be used to dry and purify industrial gases such as hydrogen and nitrogen and remove organic pollutants from industrial waste gases. In addition, 5A molecular sieves can also be used in water treatment, such as softened water, purified water, wastewater treatment, etc.

Glass industry: In the glass industry, 5A molecular sieves can be used as an important part of the glass compound, playing the role of homogenizing agent, diluent, and clarifying agent to improve the quality of glass and improve the efficiency of glass melting.

Ceramic industry: In the ceramic industry, 5A molecular sieve can be used as one of the raw materials for the production of ceramics, but also as a desiccant and dehydrating agent for ceramic products to improve the quality and production efficiency of ceramic products.

Agriculture: 5A molecular sieves can be used to produce pesticides such as plant growth regulators and herbicides and as fertilizer synergists to improve fertilizer utilization.

Food industry: In the food industry, 5A molecular sieves can be used to produce food additives and seasonings, etc., and as a desiccant and water removal agent for food packaging.

Pharmaceutical industry: In the pharmaceutical industry, 5A molecular sieves can be used in drug production and purification, such as preparing antibiotics, amino acids, proteins, etc.

Scientific research: In scientific research, the 5A molecular sieve is also widely used as an important catalyst and adsorbent in various research fields, such as materials science, physical chemistry, energy science, and so on.

Production Method of Molecular Sieves 5A:
Hydrothermal synthesis
Hydrothermal synthesis is one of the main methods for producing 5A molecular sieves. 
Raw materials such as sodium silicate, sodium aluminate, and sodium hydroxide are mixed under high temperatures and high pressure in this method. Then, a 5A molecular sieve is directly synthesized by controlling the reaction temperature, pressure, and raw material ratio. The advantage of hydrothermal synthesis is that the production process is relatively simple, the production efficiency is high, and it can be large-scale production. However, this method requires a large amount of organic formwork agent, while the equipment requirements are high, requiring high-temperature and high-pressure equipment.
Seeding method
The crystal seed method is a method to prepare a 5A molecular sieve by adding crystal seed as a templating agent in sodium silicate solution and controlling reaction temperature, pH value, and raw material ratio. The advantage of this method is that fewer organic template agents can be used, and the requirements for equipment are lower, which can be suitable for small-scale production. However, the production process of the crystal seed method is more complex, requires strict control of various parameters, and the production cycle is longer.
Ion exchange method
The ion exchange method uses raw materials such as sodium silicate, sodium aluminate, and sodium hydroxide mixed through an ion exchange reaction to prepare the 5A molecular sieve method. The advantage of this method is that the sodium ions in the raw material can be exchanged directly, and a high-purity 5A molecular sieve can be obtained. At the same time, the ion exchange method could be used to produce different types of molecular sieves. However, this method requires a large number of washing and drying steps, the production cost is high, and the requirements for equipment are also high.

Packing & Shipping of Molecular Sieves 5A:

25kg/carton lined with PE bag;

55 gallon / sealed steel drum;

TRUNNANO can customize different packaging according to customer requirements.

Molecular Sieves 5A supplier :

Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.

If you are looking for high-quality Molecular Sieves 5A, please feel free to contact us and send an inquiry. ([email protected])


Molecular Sieves 5A Properties

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Molecular Sieves 5A Health & Safety Information

Signal Word N/A
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