4A Molecular Sieve

 Molecular Sieve 4A 

Product Description.

Chemxin Molecular Sieve type 4A is an alkali alumina silicate; it is the sodium form of the Type A crystal structure and has an effective pore opening of about 4 angstroms (0.4nm). 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. It can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes. 

Typical Application:

- Used in instruments/devices for drying moisture;

4A Molecular Sieve for Removing Water from Acetone Solvent

The diameter of acetone molecule is about 0.6 nanometers. It is recommended to use CHEMXIN 4A molecular sieve desiccant, which has the highest cost performance.

Precautions for the use of molecular sieve
Pretreatment:
When the acetone solution flows through the molecular sieve tank for drying, it needs to be filtered first to ensure that the solution has removed most of the water, suspended matter and impurities to prevent affecting the drying effect of the molecular sieve.
Control temperature:
During both the drying process and the regeneration process, it is necessary to pay attention to controlling the operating temperature. Too high a temperature will affect the adsorption effect, and insufficient temperature will reduce the activation and regeneration effect.
Ensure contact time:
Molecular sieve adsorption and drying is a physical behavior. The acetone solution flowing through the molecular sieve needs to control the appropriate contact time to ensure sufficient contact time.

Production Process.

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