Analytical review of the current state of knowledge of adsorption materials and processes for direct air capture

Significant research interest has been directed towards the deployment of direct air capture (DAC) as a net-negative CO2 emissions technology to help limit global temperature rise below 2 °C. The scope this review is outline advancement adsorption-based DAC technologies, well highlight still-existing data gaps, for both materials’ development and process design in period 2016 – 2021. On material side, we available missing on adsorbent properties relation what needed modelling design. We cover densities, textural properties, thermal adsorption isotherms (i.e. CO2, N2, O2, H2O), kinetics, stability humidity, oxidation, cycling. provide detailed look at key studies conducted same time frame by considering trade-offs be expected process. focus configuration contactor design, desorption processes, need systematic reporting performance indicators allow accurate comparisons benchmarking. Throughout review, identify lack synergy between which must addressed advance field adsorption.