低共熔溶剂用于CO_(2)捕集的研究进展

Research progress of deep eutectic solvents for CO_(2) capture

低共熔溶剂(DESs)具有原料廉价易得、化学稳定性好、可设计、合成工艺简单、可循环使用和绿色环保等优点,在CO_(2)捕集领域受到广泛关注。重点综述了近年来DESs用于CO_(2)捕集的研究进展,总结了DESs捕集CO_(2)的能力,分析了DESs捕集CO_(2)的影响因素和DESs的循环使用性能,归纳了DESs捕集CO_(2)的机理(包括物理吸收、化学吸收和物理化学协同吸收),并总结了CO_(2)在DESs中的溶解度计算模型。分析发现,DESs捕集CO_(2)的影响因素中,温度、压力和水含量(质量分数)均对CO_(2)的捕集有影响,且DESs的结构是重要的影响因素;大部分DESs可循环使用;CO_(2)在DESs中溶解度计算模型的建立有效推动了DESs捕集CO_(2)的进一步发展。最后,指出了DESs捕集分离CO_(2)所面临的主要问题并对进一步的研究工作进行了分析讨论。

Deep eutectic solvents(DESs)have attracted great attention in CO_(2) capture because of its advantages of cheap raw materials,good chemical stability,designability,simple synthesis process,recyclability and environmental protection.The research progress of DESs applied in CO_(2) capture in recent years was reviewed.The abilities of DESs for CO_(2) capture were summarized and the affecting factors were analyzed.Meanwhile,the recycling performance of DESs was introduced and the capture mechanisms,including physical absorption,chemical absorption and physico-chemical synergistic absorption were summarized.Furthermore,the calculation models of the solubility of CO_(2) in DESs were summarized.It was found that temperature,pressure and water content(mass fraction)had a certain influence on CO_(2) capture,and the structure of DESs was a deeply important affecting factor.Most of DESs could be recycled and the establishment of solubility calculation model effectively promoted the further development of CO_(2) capture by DESs.Finally,the main problems of CO_(2) capture by DESs were pointed out and its further research works were analyzed and discussed.