Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 338, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2021.116653
Keywords
Carbon capture; Ionic liquid; Mesoporous polymer; Amine functionalization; Chemical adsorption
Funding
- National Natural Science Foundation of China [22008033]
- Natural Science Foundation of Jiangxi Province [20192ACB21016]
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Dispersing APC-ILs in PDVB is an effective approach to obtain adsorbents with high efficiency and improved performance for carbon capture from dilute sources, showing superior adsorption capacity and selectivity.
Y Aminopolycarboxylate ILs (APC-ILs)-a kind of anion-grafted amine-functionalized ILs enabling 1:2 stoichiometry of reaction with CO2-were dispersed in mesoporous organic polymer to achieve a new class of adsorbents. The mesoporous organic polymer selected herein is polydivinylbenzene (PDVB) that can be facilely synthesized by a solvothermal route without any templates. The prepared APC-IL@PDVB samples were then systematically characterized and investigated for carbon capture performance. It is found that APC-IL@PDVB samples can efficiently adsorb CO2 from dilute source, with the highest CO2 capacity of 1.65 mmol/g and IL utilization ratio of 1.53 mol/mol at 30 degrees C for 10 vol% of CO2 balanced in N-2. The CO2 capacities of APC-IL@PDVB samples surpass the values of most other solid-dispersed ILs, and the IL utilization ratios surpass the values of most non-dispersed ILs. The adsorption of CO2 by APC-IL@PDVB samples is also highly selective towards N-2, and reversible throughout consecutive adsorption-desorption cycles. Therefore, dispersing APC-ILs in PDVB is an effective approach to obtain adsorbents with high efficiency and improved performance for carbon capture from dilute source. (C) 2021 Elsevier B.V. All rights reserved.
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