Water coadsorption effect on the physical adsorption of N2 and O2 at room temperature on carbon molecular sieve fibers

摘要: The effect of water vapours on the physical adsorption nitrogen and oxygen from air, surface an activated carbon molecular sieve fibre, was studied by temperature-programmed desorption mass spectrometry with a supersonic beam inlet system. During exposure at room temperature to moist kinetics for are fast, being slightly faster, however, much slower. When starts fill pore volume, adsorbed removed, more easily removed. At high relative humidity, hydrogen bonding between neighbouring molecules leads formation clusters water, which trap form new sites adsorption. modification sieves, evacuation temperatures, also explored.