having a strong affinity for a specific size of molecule. The 3-Å molecular sieve’s structure allows water vapor adsorption The 4-Å molecular sieve has a slightly higher water vapor capacity but also adsorbs larger molecules including oxygen and nitrogen Molecular sieves have a high adsorption capacity at low relative humidity are therefore useful in dry environments as the inter pane glazing space. These crystals are characterized by a three-dimensional pore system, with pores of precisely defined diameter.

Double glazing
  • desiccant molecular sieve
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