4A Molecular Sieve Becomes a Powerful Assistant in Industrial Production
4A molecular sieve is a commonly used chemical product in chemical production, usually used as adsorbent and catalyst. In recent years, the classification of molecular sieves has increased gradually. What are the functions and effects of molecular sieve type 4A?
Characteristics of molecular sieve 4A
Selective adsorption according to different molecule sizes and shapes
Molecular sieve 4A crystals have honeycomb structure, the crystal cavity and channel are connected, and the pore size is uniformly fixed (the pore diameter of molecular sieve cavity is generally between 3-15 angstroms), equivalent to the size of ordinary molecules. Only those smaller molecules can be adsorbed by 4A molecular sieve through zeolite pore channels, while larger molecules cannot be adsorbed by molecular sieves due to their inability to enter zeolite pore channels. Silica gel, activated alumina, and activated carbon do not have uniform pore size, and pore size distribution range is very wide, so they do not have sieving performance.
Adsorption property depends on selectivity and degree of unsaturation
4A molecular sieve has high affinity to polar and unsaturated molecules. Among non-polar molecules, molecules with higher degrees of unsaturation have higher selective adsorption advantages. In addition, molecules with lower boiling points are less likely to be adsorbed by molecular sieves. 4a sieve has high adsorption capacity, strong selectivity and high temperature resistance. It can be widely used in organic chemical and petrochemical industries, and is also an excellent adsorbent for gas dehydration. Its role in waste gas and purification is very significant, attracting the attention of many people.
The functions and effects of molecular sieve 4A
First of all, molecular sieve 4A has the function of softening water quality: its function is to show the function of softening water quality, especially in its framework, where every oxygen atom is shared by two adjacent tetrahedrons. This structure also determines the large crystal cavity occupied by cations and water molecules, which has a better softening water quality purpose. It is now used for purifying water, and has significant characteristics in adsorbing harmful heavy metal ions in water solutions, with more significant water purification effect. Secondly, molecular sieve 4A can be used as a detergent, mainly used for exchanging calcium ions in water, producing soft water, removing dirt, and preventing dirt precipitation. 4A molecular sieve is currently a mature phosphate removal aid product, which can replace sodium tripolyphosphate as a detergent, playing an important role in solving environmental pollution.
The application of molecular sieve 4A: Molecular sieves have selective adsorption, which can remove water from organic solvents and gases, but does not adsorb solvents and gases, such as tetrahydrofuran. The original dehydration method was to use caustic soda to remove water, but caustic soda is soluble in water and is difficult to separate from tetrahydrofuran after dehydration. The use of caustic soda is difficult to recover, and it invisibly increases costs.
Therefore, after the successful development of 4a sieves, 4A molecular sieve has become a powerful assistant for many industrial producers. If there are other related products, please pay attention to our Naike Chemical. We provide better services for users, feel free to buy and use!