What is molecular sieve? Molecular sieves are materials that contain precise and single tiny pores that can be used to adsorb gases or liquids. Small enough molecules can be adsorbed through the pores, while larger molecules cannot. However, with the deepening of molecular sieve synthesis and application research, researchers have discovered aluminophosphate molecular sieves, and the framework elements (silicon or aluminum or phosphorus) of molecular sieves can also be composed of B, Ga, Fe, Cr, Ge, Ti, V , Mn, Co, Zn, Be and Cu, etc., the size of the channels and cavities can reach more than 2nm, so molecular sieves can be divided into silicon-aluminum molecular sieves, phosphorus-aluminum molecular sieves and framework heteroatom molecular sieves according to the composition of framework elements; According to the pore size, molecular sieves with a pore size smaller than 2 nm, 2-50 nm and larger than 50 nm are called micropore, mesopore and macropore molecular sieves, respectively.

As a new type of material, molecular sieve is a frontier subject emerging in the field of materials science in recent years, and has become a hot research topic in today's scientific community. Its excellent and wide application performance is a huge driving force for its rapid development. Nano-molecular sieves have broad application prospects in the fields of energy and information as optoelectronic materials and energy storage materials. In particular, macroporous molecular sieves have broad application prospects in the fields of life sciences such as protein immobilization and separation, biochips, biosensors, drug embedding and controlled release.

Molecular sieves are closely related to our lives, such as petroleum cracking agents, catalysts, adsorbents, fungicides, algaecides, etc. Under the conditions of normal temperature, normal pressure and neutral pH value, the removal rate of heavy metals (lead Pb, cadmium Cd, mercury Hg, chromium Cr, nickel Ni, copper Cu, zinc Zn, manganese Mn) in water body is above 98% ; The one-time removal rate of COD and ammonia nitrogen in oily wastewater reaches 75%; the removal rate of fluoride ion, arsenic ion and nitrate ion in drinking water is more than 90%; the removal rate of aniline and phenol in wastewater reaches 90% % or more; the removal rate of methylene blue in printing and dyeing wastewater is more than 90%, and the decolorization effect is very good. As a bactericidal material, a composite material composed of nano-molecular sieve and diatomaceous earth is used in water treatment. The removal rate of ammonia nitrogen in the treated wastewater reaches 80%, and the removal rate of phosphorus in the wastewater is 90%. The composite materials are used in water treatment to form dynamic membranes, and good results have been achieved in removing heavy metals, ammonia nitrogen, phosphorus, etc. in wastewater, and fluoride ions in drinking water are removed. The fluoride ion in drinking water was treated, and the water samples with high fluoride content such as Toray and Beichen were treated, and the effect was very good, all of which met the drinking water standard.

Juna Group is undoubtedly at the forefront of the industry in this regard. The molecular sieves developed by United International are at the international leading level. The application of molecular sieves will surely improve our lives, and Juna Group will also make its greatest contribution.