Effect of temperature on hydrogen and carbon dioxide adsorption hysteresis in an ultramicroporous MOF

Different types of hysteresis commonly observed in gas adsorption isotherms of metal-organic frameworks (MOFs) and possible reasons are discussed. The temperature effect of hydrogen (H2) and carbon dioxide (CO2) adsorption/desorption hysteresis in an ultramicroporous MOF and a method to obtain accurate isosteric heats of adsorption in small-pore adsorbent materials are presented.