Molecular Sieve Conference in Qingdao, China
SSZ-13
It was synthesized by an unconventional process involving the addition of Al(NO3)3 as the Al source, followed by a base and structure-directing agent. The zeolite was then subjected to a series of tests to determine its CO2 adsorption performance. The pore structure of the zeolite also hinders the formation of by-products.
Molecular sieves are an excellent choice for catalyst applications, as they provide excellent surface area and uniform pore diameter. This helps in promoting the interaction between the active component and carrier, and also improves the catalytic performance of the catalyst. However, there are some disadvantages of this type of molecular sieve, including low redox performance and poor ion-exchange capacity.
Activated Alumina
Molecular sieve is a type of adsorbent which can separate particular molecules. It can separate certain molecules from each other, such as water and ethanol. Molecular sieves are also able to separate larger hydrocarbons, such as propane and ammonia. Compared with activated alumina, molecular sieves have better adsorption properties and can handle high temperatures and low relative humidity.
This highly porous material is made up of aluminum oxide and is produced by dihydroxylation of aluminum hydroxide. It has a high surface area - about 200 square meters per gram - which makes it ideal for various applications. For example, activated alumina is an ideal desiccant, which means that it can absorb water from the air. Furthermore, it can filter chemicals, such as arsenic, fluoride, and selenium. This product is also used as a catalyst carrier.
Activated Zeolite
Activated zeolite is a highly-efficient adsorbent material. This mineral has excellent adsorption capacity and excellent dispersibility. The adsorbent can remove trace water and impurities from water and other liquids, while prolonging their service life.
Zeolite molecular sieves have a wide range of applications in science, industry, and everyday life. Their uses include adsorption, catalysis, and ion exchange. Moreover, they play a vital role in a variety of processes, including petroleum cracking, water softening, and decontamination.
Activated Silica
The main feature of molecular sieves is their ability to retain a specific chemical or physical property. This is possible with the help of different chemical processes. One method involves the use of air to generate a micron-scale mist. The particles are formed in a spherical shape and contain a core-shell structure. These particles have a spherical core and a thin layer of annular pores on the outside. Inside, there is a three-dimensional short worm-like pore structure. This feature makes the molecular sieves very suitable for the controlled release of drugs.
The molecular sieve can be used in many industrial applications. For example, it can be used in the purification of gases and liquids. It can also be used to dry various industrial products such as hydrocarbons and petrochemicals.
Activated Carbon
China Molecular Sieve Activated Carbon (CSAC) is a popular material used in air purification applications. The material's high pore size, strong polarity, and low Si/Al ratio make it an effective choice for CO2 adsorption. Its pore size is approximately 8-10 A, larger than 5A, 4A, and 3A molecular sieves. The high polarity of 13X makes it ideal for CO2 adsorption.
The energy penalty associated with carbon dioxide adsorption depends on the process's temperature. The lower the temperature, the lower the energy penalty. However, the higher the adsorption temperature, the lower the adsorption capacity. And, because CO2 adsorbs at a higher temperature, it also requires more energy during the desorption process.
Other adsorbents
Molecular Sieve can be used in a variety of applications and is available in different pore sizes and adsorption capacities. The 13X molecular sieve has a greater pore size and lower Si/Al ratio than the 5A, 4A, or 3A molecular sieves. This type of adsorbent has a strong polar quadrupole moment and is capable of high adsorption capacity.
Zeolite is a common molecular sieve adsorbent. This type of molecular sieve material is used in many chemical processes, including raw air purification, cryogenic air separation, and adsorptive oxygen enrichment. In addition, zeolite molecular sieves are used in drying natural gas and separation of light hydrocarbons.
