Abstract—Silica dioxide (SiO
2) and activated carbon (AC) are the common porous materials being used as CO
2 capturer. In this work, saturated fatty amine (octadecylamie,ODA) was evaluated as a potential source of basic sites for CO
2 capture. Both commercial SiO
2 and AC were used as preliminary supports in order to study the effect of loading. The amine-modified samples were characterized using x-ray diffractometer (XRD), attenuated total reflextance/fourier transform infrared spectroscopy (ATR/FTIR), and Brunauer-Emmet-Teller (BET). Reactivity of solid sorbents towards CO
2 was evaluated using isothermal CO
2 adsorption by BET technique. This study shows that the order of CO
2 adsorption capacity by SiO2 type adsorbents are 25 ODA/SiO2 > SiO
2 > 15 ODA/SiO
2 > 5 ODA/SiO
2 whereas AC > 5 ODA/AC > 15 ODA/AC > 25 ODA/AC for AC type adsorbents. However, the promotion of ODA compounds on the AC was not improving the CO
2 uptake significantly due to pore blockage and drastic reduction in microporous surface area and pore volume of AC.
Index Terms—Adsorption, amine impregnation, CO
2 capture.
The authors are with the School of Chemical Science and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia (e-mail: maratunnajiha@gmail.com, azizulhakim2442@gmail.com, hisham5011@gmail.com, and ambar@ukm.edu.my).
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Cite: Maratun Najiha Abu Tahari, Azizul Hakim, Mohamed Wahab Mohamed Hisham, and Mohd. Ambar Yarmo, "Modification of Porous Materials by Saturated Fatty Amine as CO2 Capturer," International Journal of Chemical Engineering and Applications vol. 6, no. 6, pp. 395-400, 2015.
