Advanced conversion of industrial emissions with silica aerogels in chimney systems
발표자
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초록
내용
Many studies are being conducted worldwide to address the issue of carbon dioxide emissions. One such study involves using Direct Air Capture (DAC) technology to capture carbon dioxide at a concentration of 400 ppm from the atmosphere. One DAC research approach employs amine adsorbents on a support structure. Efforts are also underway to improve the economic efficiency by reusing these adsorbents repeatedly. In our research, we coated a silica-based aerogel with TEPA and an ionic liquid. When coated with 70 wt% TEPA and 2.5 wt% ionic liquid, a high adsorption rate of 2.8 mmol/g was observed for carbon dioxide at 400 ppm concentration at 25°C, and stability was maintained at 1 bar even after 10 cycles of adsorption-desorption. Additionally, by adding Zn2+ to induce a cycloaddition reaction, we achieved complete conversion of carbon dioxide.