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Reversible Chemical Absorption of CO2 in Polyethylenimine Supported by Low-Viscous Tetrabutylphosphonium 2-Fluorophenolate
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-02-27 , DOI: 10.1021/acs.energyfuels.9b04097 Wen-Tao Zheng 1 , Jian-Bo Zhang 2 , Yong Liu 3 , Kuan Huang 2
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-02-27 , DOI: 10.1021/acs.energyfuels.9b04097 Wen-Tao Zheng 1 , Jian-Bo Zhang 2 , Yong Liu 3 , Kuan Huang 2
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Traditional amine solutions for CO2 capture are associated with many defects such as sacrificed CO2 capacities and high volatility. Herein, a new type of mixed solvent was constructed by diluting polyethylenimine (PEI) in tetrabutylphosphonium 2-fluorophenolate ([P4444][2-F-PhO]). PEI has rich amine groups and strong chemical reactivity to CO2. [P4444][2-F-PhO] also enables the reversible chemical reaction with CO2; however, it has relatively small viscosity and does not present considerable change in viscosity after loaded with CO2. The CO2 capture performance of mixed solvents was examined systematically. It is demonstrated that the dissolution of CO2 in PEI can be significantly sped up with the assistance of [P4444][2-F-PhO], and considerably high CO2 capacities (2.62 mol/kg at 313.2 K and 15.0 kPa) are achieved in the mixed solvents. Further considering the almost nonvolatile properties of PEI and [P4444][2-F-PhO], the mixed solvents are regarded as promising absorbents for capturing CO2 from industrial streams.
中文翻译：
低粘度2-氟酚盐四丁基butyl负载的聚乙烯亚胺中CO 2的可逆化学吸收
用于捕获CO 2的传统胺溶液伴随着许多缺陷，例如牺牲的CO 2容量和高挥发性。在此，通过在2-氟苯酚四丁基phosph（[P 4444 ] [2-F-PhO]）中稀释聚乙烯亚胺（PEI）来构建新型混合溶剂。PEI具有丰富的胺基和对CO 2的强化学反应性。[P 4444 ] [2-F-PhO]还使与CO 2的可逆化学反应成为可能。然而，它具有相对较小的粘度，并且在装载了CO 2之后不会出现粘度的显着变化。一氧化碳2系统地检查了混合溶剂的捕获性能。结果表明，在[P 4444 ] [2-F-PhO]的辅助下，PEI中的CO 2溶解可以显着加快，并且具有很高的CO 2容量（在313.2 K和15.0 kPa时为2.62 mol / kg）是在混合溶剂中实现的。进一步考虑到PEI和[P 4444 ] [2-F-PhO]几乎不挥发的特性，混合溶剂被认为是从工业流中捕获CO 2的有前途的吸收剂。
更新日期：2020-02-27
中文翻译：
低粘度2-氟酚盐四丁基butyl负载的聚乙烯亚胺中CO 2的可逆化学吸收
用于捕获CO 2的传统胺溶液伴随着许多缺陷，例如牺牲的CO 2容量和高挥发性。在此，通过在2-氟苯酚四丁基phosph（[P 4444 ] [2-F-PhO]）中稀释聚乙烯亚胺（PEI）来构建新型混合溶剂。PEI具有丰富的胺基和对CO 2的强化学反应性。[P 4444 ] [2-F-PhO]还使与CO 2的可逆化学反应成为可能。然而，它具有相对较小的粘度，并且在装载了CO 2之后不会出现粘度的显着变化。一氧化碳2系统地检查了混合溶剂的捕获性能。结果表明，在[P 4444 ] [2-F-PhO]的辅助下，PEI中的CO 2溶解可以显着加快，并且具有很高的CO 2容量（在313.2 K和15.0 kPa时为2.62 mol / kg）是在混合溶剂中实现的。进一步考虑到PEI和[P 4444 ] [2-F-PhO]几乎不挥发的特性，混合溶剂被认为是从工业流中捕获CO 2的有前途的吸收剂。
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