Simulated adsorption and diffusion of CO2 gas across a meso-porous material by using convective flow models

The development Of CO2 mono and multi-molecular layer adsorption was virtually impossible at relatively low AT and thin porous media, where the flow was predominantly laminar. Only submolecular layer coverage was achieved in this flow region. In a transient state, a multi-molecular layer of adsorption occurred at an accelerated pace even at low AT or increasing surface temperature. Ten of thousands of CO2 molecules stacked up to form arrays of cohesive multi-molecular layers on the pore wall to completely fill up the micro and the meso-pore spaces and to partially fill up the macro-pores at Delta T = 5 K. The calculated adsorption Of CO2 from convective models was significantly higher in the turbulent system, in the order of 1 x 10(-7) - 6 x 10(-6) kg/s in the region of AT = 15 - 100 K. The adsorption rate increased with increasing AT and the adsorption film thickness increased with increasing pore length. The surface diffusivity also increased with increasing AT, regardless of the flow region.