As a result, a molecular sieve with a pore size of about 4 ?is obtained.
22.
Molecular sieves can be used to selectively absorb the water from the 95.6 % ethanol solution.
23.
However, reducing methanol with the absorption of 4A molecular sieve is a practical method for production.
24.
Zeolites have important uses in water purification, as catalysts in the petrochemical industry, and as molecular sieves.
25.
3?molecular sieves are stored at room temperature, with a relative humidity not more than 90 %.
26.
When however, the desiccant is soluble, the speed of drying is accelerated, although still inferior to molecular sieves.
27.
Other methods include the addition of molecular sieves or alkali bases such as potassium hydroxide or barium oxide.
28.
The molecular sieves should not be directly exposed to the air and water, acids and alkalis should be avoided.
29.
A 15-liter system will be pumped down to about 10 " 2 mbar by 300 g molecular sieve.
30.
The characteristics of these molecular sieves include fast adsorption speed, frequent regeneration ability, good crushing resistance and pollution resistance.
