The effect of Uop Molecular Sieves on liquid purification
uop molecular sieve is a kind of alkali metal aluminosilicate, which can adsorb water, NH3, H2S, sulfur dioxide, carbon dioxide, C2H5OH, C2H6, C2H4 and other molecules whose critical diameter is not greater than. It is widely used in the drying of gases and liquids, and can also be used in the refining and purification of certain gases or liquids. The selective adsorption performance of water is higher than that of any other molecules.
Today, I will introduce the water softening function of uop molecular sieve.
Each oxygen atom in the framework of uop molecular sieve is shared by two adjacent tetrahedrons. This structure forms large cavities that can be occupied by cations and water molecules, and these cations and water molecules have greater mobility. , Can carry out cation exchange and reversible dehydration. The ion exchange of uop molecular sieve is carried out on a framework with aluminum ions. Each aluminum ion has a negative charge that can not only bind sodium ions, but also other cations. Calcium and magnesium ions can enter the large crystal cavities occupied by the original sodium ions, and replace the sodium ions in the uop molecular sieve—that is, the sodium ions in the uop molecular sieve can be ion exchanged, and can be exchanged with Ca2+, and Mg2+ ions in hard water Exchange, so as to achieve the purpose of softening water quality.
Uop molecular sieve binds calcium and magnesium ions slower than sodium tripolyphosphate, and has a weaker binding capacity with magnesium ions. But uop molecular sieve can remove a small amount of harmful heavy metal ions in the aqueous solution, such as Pb2+, Cd2+, Hg2+, which can be easily and quickly removed, which is of great significance for water purification.
Today, I will introduce the water softening function of uop molecular sieve.
Each oxygen atom in the framework of uop molecular sieve is shared by two adjacent tetrahedrons. This structure forms large cavities that can be occupied by cations and water molecules, and these cations and water molecules have greater mobility. , Can carry out cation exchange and reversible dehydration. The ion exchange of uop molecular sieve is carried out on a framework with aluminum ions. Each aluminum ion has a negative charge that can not only bind sodium ions, but also other cations. Calcium and magnesium ions can enter the large crystal cavities occupied by the original sodium ions, and replace the sodium ions in the uop molecular sieve—that is, the sodium ions in the uop molecular sieve can be ion exchanged, and can be exchanged with Ca2+, and Mg2+ ions in hard water Exchange, so as to achieve the purpose of softening water quality.
Uop molecular sieve binds calcium and magnesium ions slower than sodium tripolyphosphate, and has a weaker binding capacity with magnesium ions. But uop molecular sieve can remove a small amount of harmful heavy metal ions in the aqueous solution, such as Pb2+, Cd2+, Hg2+, which can be easily and quickly removed, which is of great significance for water purification.
