Langmuir moderate type 1 desiccant mixture for air treatment
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United States of America Patent
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Apr 5, 1994
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N/A
app pub date -
Jan 21, 1993
filing date -
Jan 21, 1993
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Abstract
A desiccant composition having a moderate Langmuir Type 1 moisture adsorption isotherm with a separation factor of from 0.05 to 0.13 is disclosed. The composition contains silica gel, a modified 13.times. molecular sieve (modified by replacing at least 20% of the sodium cations with other metallic cations, e.g., potassium cations), and desirably a hydrophobic adsorbent (desirably a hydrophobic molecular sieve). The composition may be used as the desiccant in a rotary regeneratable dehumidification wheel, thereby significantly enhancing dehumidification performance and simultaneously removing a significant proportion of the airborne pollutants typically contained in indoor and outdoor air.
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