王兰云;张亚娟;徐永亮;李瑶;魏建平;

• 1:河南理工大学安全科学与工程学院
• 2:瓦斯地质与瓦斯控制国家重点实验室培育基地
• 3:煤炭安全生产河南省协同创新中心

摘要(Abstract)：

鉴于离子液体(Ionic Liquids, ILs)的低挥发和低腐蚀性的优点，近年来不少学者利用ILs替代传统碱液捕集和分离CO_2。介绍了近年来ILs-CO_2的物理和化学吸收机理，并分析了氨基功能化ILs和非质子杂环(AHA)ILs吸收CO_2前后黏度变化规律，以及用水降黏后ILs水溶液对CO_2吸收性能的影响。综合分析ILs-CO_2的相互作用，发现增强ILs-CO_2的范德华相互作用(如色散力、静电力作用)有助于物理吸收CO_2;提高官能团碱度、合理利用离子间质子转移有助于化学吸收CO_2。在吸收CO_2后，氨基功能化ILs黏度多呈增加趋势；而AHA ILs形成氢键网络的可能性较小，因此黏度变化不明显甚至有下降趋势。水作为稀释剂可有效降低氨基功能化和AHA ILs黏度，低压时仍然能够通过化学吸收捕集CO_2。对于ILs-H_2O复配体系，可综合考虑降低温度、提高压力、调节ILs-H_2O复配比例，协同化学吸收和物理吸收机制来提高CO_2吸收性能。

关键词(KeyWords)： 环境工程学;离子液体;二氧化碳;吸收机理;黏度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51874124,52074108);; 河南科技攻关项目(212102310007);; 河南理工大学杰出青年基金项目(J2019-5)

作者(Authors): 王兰云;张亚娟;徐永亮;李瑶;魏建平;

DOI: 10.13637/j.issn.1009-6094.2021.0377

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