(288g) Upgrading of Low-Value Carbon Precursors to Porous Carbon Materials for Greenhouse Gas Capture

Global warming and the related climate change issues, attributed to the increase of greenhouse gas emissions, have attracted significant attention worldwide. To reduce the greenhouse gas emissions from the energy sector, many studies have been conducted on the development of CO₂ capture and storage (CCS) technology. Adsorption using solid materials is promising for CO₂ capture as this approach exhibits advantages of low energy requirement for regeneration, scale-up feasibility, and mild operating conditions. Among various adsorbents, activated carbon is attractive because of advantages such as cost-effectiveness, chemical and mechanical stabilities, and tunable pore structures. Activated carbon can be obtained from several carbon-containing precursors. In this study, low-value carbon precursors were used to produce high value-added porous carbon for capturing greenhouse gases including CO₂. From the experimental results, the relation between porosities and greenhouse gas adsorption uptakes were investigated and the pore size that is crucial for greenhouse gas capture was determined. The prepared porous carbons not only exhibited a high greenhouse gas uptake, but also good selectivity, simple regeneration, excellent cyclic stability, and rapid adsorption-desorption kinetics.