本文发现了一种高效两相吸收剂:BDA(1,4-丁二胺)与DEEA(N,N-二甲基乙醇胺)组成的混合溶液,采用快速筛选实验台和自动滴定仪确定了其最佳浓度,并用离子色谱仪分析了吸收结束后上下层的胺,CO2和水的分布,应用核磁共振仪研究了CO2与胺的反应产物.结果表明,该吸收剂的最佳浓度为2 mol/L BDA+4 mol/L DEEA (2B4D),吸收后下层吸收的CO2占总吸收量的97.4％,满足两相系统的要求.91％的CO2在与胺反应后转化为氨基甲酸根,其余以自由态的CO2以及CO32-/HCO3的形式存在.
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