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CO2 adsorption study on primary, secondary and tertiary amine functionalized Si-MCM-41

Ahmed, S. and Ramli, A. and Yusup, S. (2016) CO2 adsorption study on primary, secondary and tertiary amine functionalized Si-MCM-41. International Journal of Greenhouse Gas Control, 51 . pp. 230-238.

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Abstract

The present study was conducted to investigate the CO2 adsorption efficiency of siliceous mesoporous material known Si-MCM-41 and impacts of amine loading, amine type, CO2 pressure and adsorption temperatures on CO2 adsorption. Si-MCM-41 was impregnated with monoethanolamine (MEA), diethanolamine (DEA) and triethanolamine (TEA). The adsorption study was investigated from very low pressure to 1 bar at three temperatures (i.e. 25, 50 and 75 °C) in pure CO2 atmosphere. Pristine Si-MCM-41 shows maximum CO2 adsorption capacity of 27.78 mg/g at 25 °C and 1 bar pressure. Monoethanolamine functionalized Si-MCM-41 with 10�50 wt. samples were investigated in order to optimize MEA loading for maximum CO2 adsorption. The 50 wt. MEA-Si-MCM-41 sample exhibited the highest CO2 adsorption capacity of 39.26 mg/g at 25 °C and 1 bar pressure as compared to other samples. 50 wt. DEA-Si-MCM-41 and 50 wt. TEA-Si-MCM-41 samples were also investigated for their affinity to capture CO2 at the same conditions. Results show that 50 wt. MEA-Si-MCM-41 still gives the highest CO2 adsorption capacity while adsorption capacity decreased in order of monoethanolamine, diethanolamine and triethanolamine-functionalized Si-MCM-41. CO2 adsorption capacity of all adsorbents decreases with increasing adsorption temperature above 25 °C. Fourier transform infrared spectroscopy (FTIR) analysis of CO2-saturated 50 wt. MEA, DEA and TEA-Si-MCM-41 samples shows the presence of transmission peaks associated to formation of carbamates. © 2016 Elsevier Ltd

Item Type:Article
Impact Factor:cited By 34
Uncontrolled Keywords:Adsorption; Atmospheric temperature; Carbon; Ethanolamines; Fourier transform infrared spectroscopy; Mesoporous materials; Silicon; Triethanolamine, Adsorption capacities; Adsorption efficiency; Adsorption process; Adsorption studies; Adsorption temperature; Amine functionalization; Three temperature; Transmission peaks, Carbon dioxide, adsorption; carbamate (ester); carbon dioxide; low pressure; organic nitrogen compound; temperature
ID Code:25652
Deposited By: Ms Sharifah Fahimah Saiyed Yeop
Deposited On:27 Aug 2021 09:39
Last Modified:27 Aug 2021 09:39

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