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Adsorption selection of molecular sieves for gas molecules


Date:October 13, 2018

Sequence of adsorption strength of molecular sieves on some substances 

(strong adsorption to polar molecules and polarizable molecules)

H2O>NH3>CH3OH>CH3SH>H2S>COS>CO2>N2>CH4

Water is the most easily adsorbed, and methane is not easily adsorbed. 

When the diameter of the adsorbed molecule is smaller than the diameter of the molecular sieve, it can enter the pore and be adsorbed.

Benzene>sulfuric acid>H2S>C3H6>isobutane>C3H8>C2H4>C2H6>CO2>CH4>CO>N2>Ar>H2>Ne


 

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