采用酸碱中和一步法制备出四甲基铵甘氨酸([N1111][Gly])功能离子液体,并进行1H NMR和TGA表征.通过[N1111][Gly]与单乙醇胺(MEA)水溶液复配成混合吸收剂,研究了不同复配浓度、温度、压力对CO2的吸收性能的影响.结果表明:在MEA溶液中添加[N1111][Gly]功能离子液体可以提高吸收CO2的速率,在本文采用的5种吸收剂中,0.3mol.L-[N1111][Gly]与0.7 mol.L-1MEA复配形成的吸收剂具有较高的吸收容量和较大的吸收速率.温度升高,混合吸收剂吸收CO2的速率增加,但平衡时的吸收容量减小.混合吸收剂的CO2吸收速率和吸收容量均随压力的升高而增加.
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