Gas adsorption and Surface Diffusion on 5Ã… Microporous Adsorbent in Transition and Turbulent Flow Region

Abstract

The flow of O2, H2 and CO2 was in transition regime at relatively lower ΔT and then became turbulent at relatively higher ΔT when passed through the 5Å microporous zeolite adsorbent. Adsorption and surface diffusivity of all the gases that are being studied in these regimes increased with increase in ΔT. For the temperature difference from 5 to 115 K, the range of adsorption of O2 was between 6.319?10-12 and 5.762?10-11 kg/s. The adsorption of H2 was between 4.4?10-13 and 3.88?10-12 kg/s for the temperature difference ranging from 1 to 20 K. The adsorption of CO2 was between 5.3?10-12 and 4.9?10-11 kg/s for the temperature difference ranging from 5 to 100 K. At pressure of 1 bar, CO2 adsorption was the highest at all ΔT, followed by O2 and H2. The surface diffusivity increases with increase in ΔT. At a particular ΔT, the diffusivity increases asymptotically regardless of the flow regions.