Study of Amine Functionalized Mesoporous Carbon as CO₂ Storage Materials

• Main Authors: Muhamad Faisal, Afif Zulfikar Pamungkas, Yuni Krisyuningsih Krisnandi
• Format: Article
• Language: English
• Published: MDPI AG 2021-03-01
• Series: Processes
• Subjects: CO₂ capture; adsorption; amine-based adsorbents; mesoporous carbon; triethylenetetramine; ethylenediamine
• Online Access: https://www.mdpi.com/2227-9717/9/3/456
• ISSN: 2227-9717

Carbon sequestration via the carbon capture and storage (CCS) method is one of the most useful methods of lowering CO₂ emissions in the atmosphere. Ethylenediamine (EDA)- and triethylenetetramine (TETA)-modified mesoporous carbon (MC) has been successfully prepared as a CO₂ storage material. The effect of various concentrations of EDA or TETA added to MC, as well as activated carbon (AC), on their CO₂ adsorption capacity were investigated using high-purity CO₂ as a feed and a titration method to quantitatively measure the amount of adsorbed CO₂. The results showed that within 60 min adsorption time, MCEDA49 gave the highest CO₂ capacity adsorption (19.68 mmol/g), followed by MC-TETA30 (11.241 mol/g). The improvement of CO₂ adsorption capacity at low TETA loadings proved that the four amine functional groups in TETA gave an advantage to CO₂ adsorption. TETA-functionalized MC has the potential to be used as a CO₂ storage material at a low concentration. Therefore, it is relatively benign and friendly to the environment.