| Issue |
Korean Journal of Chemical Engineering,
Vol.35, No.3, 798-804, 2018
Vol.35, No.3, 798-804, 2018
Fully organic CO2 absorbent obtained by a Schiff base reaction between branched poly(ethyleneimine) and glutaraldehyde
We used a water-in-oil emulsification method to prepare particulate CO2 absorbents from branched poly(ethyleneimine) (PEI), utilizing 13C nuclear magnetic resonance spectroscopy to determine the amount of free PEI NH2 groups and thus calculate the required cross-linker amount. The functional groups and reactivity of branched PEI particles were characterized by Fourier transform infrared spectroscopy, and their CO2 absorption capacity was determined by thermogravimetric analysis. Dynamic light scattering measurements showed that the synthesized particles exhibited sizes of 0.2-2 μm and high surface areas, which resulted in high CO2 absorption capacities of up to 2.18 mmol CO2 per gram sorbent at 75 °C.
Keywords:
Carbon Dioxide Absorbent; Organic Particle; Schiff Base Reaction; Primary Amine; Surface Area
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참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.