Molecular sieve manufacturer explains the preparation of coatings or selective membranes using molecular sieves

Molecular sieves are crystalline hydrated aluminum silicate with micropores and regular structures. Molecular sieve micropores are of molecular size. The existence of these micropores makes molecular sieves possess adsorption, catalysis, and ion exchange properties, which are of great significance in the chemical industry.
Currently, there is an increasing interest in the application research of new molecular sieves, involving fields such as process integration, green chemistry, composite materials, pharmaceuticals, animal food applications, optical or electrical based applications, multifunctional fibers, and nanotechnology. In addition, the concept of molecular sieves can be extended to so-called porous customized materials. These materials include oxide molecular sieves, porous complex solids, porous carbon materials, oxides prepared by the sol gel method and porous heteropolyacids. Therefore, the term molecular sieve material is frequently used in a very broad sense. Below, molecular sieve manufacturer introduces the coating and membrane of molecular sieve.
Molecular sieves are multifunctional materials that can be prepared as coatings or selective membranes for molecular separation; Reaction and separation can also be integrated on a single device, including the application of micro reactors and sensors. Generally, molecular sieves are synthesized in the pores of the carrier, so the carrier is often eroded by the precursor of molecular sieve gel, and its chemical composition and transport characteristics will be affected. Molecular sieve membranes synthesized in the pores of carriers have better mechanical strength than continuous membranes synthesized on the plane provided by certain specific carriers. The advantage of these specific carriers is that the microcrystals are easily processed to obtain different crystal phase orientations. Obtaining different crystal phase orientations is important because the crystal phase orientation of molecular sieve membranes has a significant impact on their performance, which has been proven in the separation of o-xylene or m-xylene from p-xylene.
Molecular sieve films are usually prepared by single layer coating, such as on anti-corrosion coatings, antibacterial agent coatings, and catalyst particles wrapped around molecular sieves. In addition, the molecular sieve synthesis technology of ionic liquids (ionic liquids have low vapor pressure and possess both solvent and directing agent functions) has been used to obtain new molecular sieve crystal forms, and may also be used to prepare molecular sieve coatings at atmospheric pressure. This means that under relatively mild conditions, it is possible to achieve large-scale preparation of molecular sieve coatings without the need for traditional autoclaves.
Recently invented molecular sieve membrane preparation methods have been applied to microwave radiation, continuous or semi continuous synthesis systems, involving nutrient separation, low-temperature activation conditions, and other aspects. The synthesis of molecular sieve membranes and their applications in gas separation, pervaporation, and membrane reactors have been extensively discussed. Hunan Providence New Materials Co., Ltd is a professional molecular sieve manufacturer which can provide USY zeolite, NaY zeolite, REY zeolite, ZSM-5 zeolite, welcome to consult.