What is Molecular Sieve 13X?

BASF 13X Molecular Sieve is a highly selective adsorbent designed for the elimination of trace contaminants from air and other gases. It can also be used for the desulphurization (sweetening) of natural gas and other fluids, especially for the removal of mercaptanes, and for drying of gases and liquids.

How much water can molecular sieves absorb?

Molecular sieve desiccants have a very strong affinity and a high adsorptive capacity for water in an environment of low water concentration. At 25°C/10%RH, molecular sieves can adsorb water to approximately 14% of their own weight.

What are 4A molecular sieves?

4A. The 4A molecular sieve is an alkali metal aluminosilicate with an effective pore opening of approximately 4 angstroms. The sodium form of type A is widely used as a general-purpose drying agent and has good physical and adsorption properties.

How do you regenerate 3A molecular sieves?

To regenerate the sieve you need to remove the adsorbed moisture and other materials. To regenerate 3A Molecular Sieve heat to 250ƒ. Keep 3A Molecular Sieve in an air tight container until ready for use to avoid unintended moisture adsorption.

How does a molecular sieve work?

Molecular sieves are synthetic zeolite materials engineered with pores of precise and uniform structure and size. A molecular sieve works by adsorbing gas or liquid molecules that are smaller than the effective diameter of its pores, while excluding those molecules that are larger than the openings.

Can you reuse molecular sieves?

Molecular sieves may be reused by allowing them to air- dry in a fume hood for a few days to remove all the surface acetone. Once acetone was no longer detected (smelled), the molecular sieves were transferred to an oven-safe container (metal or Pyrex) (fig. 7) and placed into a 250°C oven for 24 hours.

What is the strongest desiccant?

Molecular sieve
Molecular sieve is the best desiccant based on technical performance characteristics. Its ability to adsorb moisture, in this case water vapor, is so pronounced that it can remove trapped H20 molecules from a fully saturated silica gel bead, which in turn changes the silica gel back to its original Cobalt blue color.

Is molecular sieve expensive?

Being synthetic rather than naturally occurring, molecular sieve is higher in cost per unit, but due to its extremely large range of adsorptive capabilities, it might often be the best value.

Do I need to activate molecular sieves?

If the sieves are fully active they will become too hot to hold, even through the glove. Dehydration means 3A or 4A molecular sieves are needed. They can be activated by passing hot dry gas through them. A molecular sieve is a material with pores (very small holes) of uniform size.

How long do molecular sieves last?

Once activated, the sieves can be stored in a glass container with a double wrapped parafilm. This will keep them activated for up to six months. To check if the sieves are active, you can hold them in your hand while wearing gloves and add water to them.

What is molecular sieve used for?

Molecular sieves are used for drying gases and liquids and for separating molecules on the basis of their sizes and shapes. When two molecules are equally small and can enter the pores, separation is based on the polarity (charge separation) of the molecule, the more polar molecule being preferentially adsorbed.

How long will desiccant last?

We recommend that a desiccant be replaced once every three years for open-cycle systems and once every two years for closed-cycle systems. A desiccant may degrade more quickly depending on the environment where it is used. Dew point temperatures offer a good indication for when to replace your desiccant.

How big can molecules fit in a molecular sieve?

Molecular Sieve 13X is an alkali metal aluminosilicate; it is the sodium form of the type X crystal structure. It adsorbs molecules with effective diameters small than 10 angstrom (1 nm). it can remove molecules too large to fit into type A molecular siev We’re here to help: Easy ways to get the answers you need.

What are the advantages of a 13x hp sieve?

13X-HP molecular sieve designed generators: – Smaller and lighter with the same oxygen output as a larger PSA O2 HP molecular sieve design. – Reduced energy, airflow, and sieve usage per volume of oxygen. 13X-HP adsorbent superior performance is directly related to its enhanced N 2 /O 2, selectivity relative to PSA O2 HP adsorbent.

Which is better zeolite X or 13X molecular sieve?

The 13X molecular sieve is the sodium form of zeolite X and has a much larger pore opening than the type A crystals, with an effective pore diameter of 10 angstroms. It also has the highest theoretical capacity of the common adsorbents and excellent mass transfer rates.

What is the chemical formula for Molecular Sieve 13X?

Molecular sieve 13X is can adsorb aromatics and branched-chain hydrocarbons. Molecular sieve 13X is commonly used in removal of mercaptans, removal of CO2 in cryogenic air separation, etc. Synonym: Zeolite 13X, Molsive 13X, 13X molecular sieve, 13X-APG Typical Chemical Formula: Na86 [ (AlO2)86 (SiO2)106].nH2O Silica-alumina ratio: SiO2/ Al2O3≈2.4