Heats of adsorption and desorption of CO2, CH4, SO2, O2 AND N2 on microporous carbons Original Research Article

Flow adsorption experiments have been carried out on CH4, O2, N2 and H2O with active carbons at a range of pressures and temperatures. The equipment used was a new model Microscal Flow Adsorption Microcalorimeter in which the adsorption and the associated heat evolution could be measured simultaneously with the aid of appropriate down stream detectors. The flow methods permitted to study the sequential adsorption and desorption of the gases, and repetition of the cycles to an assessment of the adsorption reversibility. The effect of temperature on the reversibility was investigated up to 220 °C. The pressures used for the adsorption of the permanent gases ranged from atmospheric to 50 bar g.