The uses and functions of 4A molecular sieve

Granular 4A molecular sieve is a commonly used chemical product in chemical production, typically serving as an adsorbent and catalyst.

The synthesis technology of 4A molecular sieve has evolved from the original process using alumina, silica and alkali as raw materials to the current multi-material synthesis technology with clay and other minerals as raw materials. After the successful development of high-performance granular binder-free 4A molecular sieve, it has become a powerful assistant for many industrial producers.

In the industrial development of recent years, the classification of molecular sieves has been gradually expanding.

What are the Functions and Effects of 4A Molecular Sieve?

First and foremost, 4A molecular sieve has the function of water softening, which is one of its core properties. Especially in its framework, each oxygen atom is shared by two adjacent tetrahedrons. This unique structure forms large crystal cavities occupied by cations and water molecules, endowing it with an excellent water softening effect. Currently, it is applied in water purification and other fields, and it features remarkable performance in adsorbing harmful heavy metal ions in aqueous solutions, achieving a more prominent water purification effect.

Secondly, 4A molecular sieve can be used as a detergent additive. Its primary role is to exchange calcium ions in water to produce soft water, remove dirt and prevent dirt precipitation. As the most mature product among phosphorus-free detergent builders in current application, 4A molecular sieve replacing sodium tripolyphosphate as a detergent additive plays a vital role in addressing environmental pollution. In addition, 4A molecular sieve can also be used as a forming agent for soap and an abrasive for toothpaste. With a pore size of 4 angstroms (4A), it adsorbs water, ethanol and carbon dioxide, but does not adsorb any molecules with a diameter larger than 4A. Its selective adsorption performance for water is superior to that for any other molecules, making it one of the molecular sieve varieties with the largest industrial consumption.

Thirdly, 4A molecular sieve can be used as a chemical packing. The types of substances it can filter vary according to different particle sizes. It is capable of filtering molecules with extremely small diameters, delivering a better filtration effect than many other types of molecular sieves, and can conduct in-depth treatment of sewage to improve water quality significantly. Since there are numerous ions in liquids that may generate electric current, the raw materials used in the production of 4A molecular sieve for such scenarios must possess excellent insulating properties to prevent the molecular sieve from increasing the electric current in the liquid. Plastic resin is generally adopted, which not only has good insulation performance but also offers favorable thermal insulation, reducing the heat loss in wastewater.