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Encapsulated Amino‐Acid‐Based Ionic Liquids for CO2 Capture
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-07-10 , DOI: 10.1002/ejic.202000364
Liliana P. Silva 1 , Cristian Moya 1, 2 , Marco Sousa 1 , Ruben Santiago 2 , Tania E. Sintra 1 , Ana R. F. Carreira 1 , José Palomar 2 , João A. P. Coutinho 1 , Pedro J. Carvalho 1
Affiliation  

Ionic liquids have gathered special attention due to their potential for carbon dioxide capture, and their potential as solvents for mitigation of climate change. Following the scope of previous works, amino‐acid‐based ionic liquids encapsulated (ENILs) into carbonaceous submicrocapsules are here proposed as a novel material for CO2 capture. The ENILs prepared using tetrabutylphosphonium acetate ([P4,4,4,4][Ac]), used as reference, (2‐hydroxyethyl)trimethylammonium l‐phenylalaninate ([N1,1,1,2(OH)][L‐Phe]), (2‐hydroxyethyl)trimethylammonium l‐prolinate ([N1,1,1,2(OH)][L‐Pro]), and tetrabutylammonium l‐prolinate ([N4,4,4,4][L‐Pro]) were characterized by SEM, TEM, elemental analysis, TGA, and BET to assess their morphology, chemical composition, porous structure, and thermal stability. The absorption of CO2 on these materials was studied up to 0.5 MPa and 343 K. The desorption of CO2 from the saturated ENILs was evaluated, under mild conditions, evidencing these materials as promising agents for CO2 capture from post‐combustion sources, with high sorption capacity and fast and complete regeneration.

中文翻译:

封装的基于氨基酸的离子液体,用于二氧化碳捕集

离子液体由于具有捕获二氧化碳的潜力以及作为缓解气候变化的溶剂的潜力而备受关注。遵循先前的工作范围,这里提出了将氨基酸基离子液体(ENIL)封装到碳质亚微囊中的建议,作为捕获CO 2的新型材料。使用乙酸四丁基phosph([P 4,4,4,4 ] [Ac])制备的ENILs作为参考,(2-羟乙基)三甲基铵-1-苯丙氨酸盐([N 1,1,1,2(OH) ] [ -L-Phe的]),(2-羟基乙基)三甲基铵-prolinate([N 1,1,1,2(OH) ] [L-Pro的]),和四丁基-prolinate([N 4,4,4, 4] [L-Pro])通过SEM,TEM,元素分析,TGA和BET进行表征,以评估其形态,化学组成,多孔结构和热稳定性。CO的吸收2在这些材料进行了研究最多至0.5MPa和343 CO的K.解吸2从饱和ENILs进行评价,在温和条件下,证明这些材料作为有前途剂CO 2从燃烧后捕获的来源,具有高吸附能力和快速而完整的再生。
更新日期:2020-09-01
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