The effect of rotation on gas storage in nanoporous materials

Abstract

Nanoporous materials offer a promising solution for gas storage applications in various scientific and engineering domains. However, several crucial challenges need to be addressed, including adsorptive capacity, rapid loading, and controlled gas delivery. A potential approach to tackle these issues is through rotation-based methods. In this study, we investigate the impact of rotation on CO2 adsorption using activated carbon, both at the early and late stages of the adsorption process. Towards this direction, three sets of experiments were conducted; i) adsorption isotherm with rotation at each gas loading, ii) adsorption kinetics with multiple rotation performed in sequence 15 min after CO2 introduction and iii) adsorption kinetics with a single rotation after 40 h of adsorption and repetition after another 20 h. For the first two cases the comparison was performed by respective measurements without rotation while for the last case, results were compared to theoretical pseudo first order kinetic curve. Our findings demonstrate that rotation enhances the adsorptive capacity by an impressive 54%, accelerates kinetics by a factor of 3.25, and enables controllable gas delivery by adjusting the angular velocity. These results highlight rotation as a promising technique to optimize gas storage in nanoporous materials, facilitating advancements in numerous scientific and engineering applications.