Study of CO2 adsorption capacity of mesoporous carbon and activated carbon modified by triethylenetetramine (TETA)

International Symposium on Current Progress in Functional Materials

Sulistianti, I.^1 ; Krisnandi, Y.K.^1 ; Moenandar, I.^1

Department of Chemistry, Faculty of Mathematics, Natural Sciences Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

关键词: Carbon dioxide adsorption;    Commercial activated carbons;    FT-IR characterization;    Mesoporous templates;    Modification process;    Soft template methods;    Stretching vibrations;    Triethylenetetramine;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/188/1/012041/pdf
DOI  :  10.1088/1757-899X/188/1/012041

来源: IOP

【 摘 要 】

Mesoporous carbon was synthesized by soft template method using phloroglucinol and formaldehyde as a carbon source; and Pluronic F-127 as a mesoporous template. The synthesized mesoporous carbon and commercial activated carbon were modified with triethylenetetramine (TETA) to increase CO2adsorption capacity. Based on FTIR characterization, the synthesized mesoporous carbon and the activated carbon without modification process has similarity pattern. After the modification, both of them showed absorption peaks in the area around 1580 to 1650 cm-1which is known as N-H bending vibration and absorption peaks in the area around 3150 to 3380 cm-1which is known as N-H stretching vibration. The XRD results showed two peaks at 2θ = 24.21° and 2θ = 43.85°, according to JCPDS index No. 75-1621 those peak are the typical peaks for hexagonal graphite carbon. In BET analysis, the synthesized mesoporous carbon and activated carbon modified TETA have surface area, pore volume and pore diameter lower than without modification process. In carbon dioxide adsorption testing, the synthesized mesoporous carbon showed better performance than the commercial activated carbon for CO2adsorption both without modification and by modification. The synthesized mesoporous carbon obtained CO2adsorption of 9.916 mmol/g and the activated carbon of 3.84 mmol/g for on 3.5 hours of adsorption. It is three times better than activated carbon for adsorption of carbon dioxide. The modified mesoporous carbon has the best performance for adsorption of gas CO2if compared by unmodified.