受阻胺 2-[(1,1-二甲基乙基)氨基]乙醇和乙二醇组成的非水溶剂对 CO 的吸收机理。
CO Absorption Mechanism by the Nonaqueous Solvent Consisting of Hindered Amine 2-[(1,1-dimethylethyl)amino]ethanol and Ethylene Glycol.
机构信息
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China.
School of Science, China University of Geosciences, Beijing 100083, China.
出版信息
Molecules. 2020 Dec 5;25(23):5743. doi: 10.3390/molecules25235743.
In this work, we studied the CO absorption mechanism by nonaqueous solvent comprising hindered amine 2-[(1,1-dimethylethyl)amino]ethanol (TBAE) and ethylene glycol (EG). The NMR and FTIR results indicated that CO reacted with an -OH group of EG rather than the -OH of TBAE by producing hydroxyethyl carbonate species. A possible reaction pathway was suggested, which involves two steps. In the first step, the acid-base reaction between TBAE and EG generated the anion HO-CH-CH-O-; in the second step, the O of HO-CH-CH-O attacked the C atom of CO, forming carbonate species.
在这项工作中，我们研究了包含受阻胺 2-[(1,1-二甲基乙基)氨基]乙醇（TBAE）和乙二醇（EG）的非水溶剂对 CO 的吸收机制。NMR 和 FTIR 结果表明，CO 通过生成羟乙基碳酸酯物种与 EG 的-OH 而不是 TBAE 的-OH 反应。提出了一种可能的反应途径，它涉及两个步骤。在第一步中，TBAE 和 EG 之间的酸碱反应生成阴离子 HO-CH-CH-O-；在第二步中，HO-CH-CH-O 的 O 原子攻击 CO 的 C 原子，形成碳酸酯物种。
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