What is a molecular sieve?

Molecular sieve is used to dry or absorb gases and liquids. Molecular sieves are made of porous materials, usually made of aluminosilicate compound called zeolite and are used to separate substances at the molecular level. They are primarily used as drying or drying agent, these sieves are also often used in the oil industry to clean gases.

As well as a sieve can be used to separate rocks from sand, the molecular sieve separates larger molecules from smaller ones. For example, water molecules have a molecular radius of 0.193 nm, while the acetone molecule has a radius of 0.308 nm. Pouring the acetone solution into the molecular sieve would result in a smaller water molecule passing through the sieve, while larger acetone molecules remained, thus drying alcohol. When there are two molecules of the same size, molecular sieves can also separate molecules based on molecules polarity. The more polar molecules are absorbed, as if they were smaller molecules.

Unlike Sieves, which aboutThey do the rocks of the sand, the molecular sieves do not allow smaller molecules to easily pass them. Instead, these molecules are absorbed by a sieve. Empty spaces in the structure of Sieves, pores, hold these smaller molecules, so the efficiency of the sieve depends not only on the size of the pores, but on how much empty space is available inside the sieve structure.

Molecular sieves can absorb about 24 percent of their weight. Once the water is absorbed into porous holes and dried or cleaned materials, the water can be removed in different ways. Since the heat does not change the molecular structure of the sieve, the water is often removed by heating the sieve to 482 ° F (250 ° C) for two hours and then allows it to cool with minimal contact with the humid air.

Crystalline in the structure has a porous material in the molecular network of completely uniform leeks. However, these sizes vary depending on the type of sieve. EIt xists several types, including insulated glass molecular communities, types of 3A-5A and type 13x.

Insulated glass molecular sizes are used specifically for isolated glass. They prevent the accumulation of water inside the glass surface. Sieves 3a and 4A are universal drying agents. 3A are mostly used for dry or dehydrate of hydrocarbons. This is a type of sieve that would be used to dry acetone in an earlier example. 4a Sieves are used in closed systems such as electrical components and drug packaging, to ensure drought.

5A Sieves are used to remove unwanted hydrogen sulphide, extremely poisonous gas and carbon dioxide from natural gases. They are often used by the oil industry. The 13x sieves are used commercially only for gas drying.