CIESC Journal ›› 2014, Vol. 65 ›› Issue (5): 1721-1728.DOI: 10.3969/j.issn.0438-1157.2014.05.023

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Application of choline-based deep eutectic solvents in CO2 capture and separation

ZHANG Yingying1,2, JI Xiaoyan2, LU Xiaohua1   

  1. 1 State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China;
    2 Division of Energy Science/Energy Engineering, Luleå University of Technology, Luleå 97187, Sweden
  • Received:2014-01-02 Revised:2014-02-16 Online:2014-05-05 Published:2014-05-05
  • Supported by:

    supported by the National Basic Research Program of China (2013CB733501), the National Natural Science Foundation of China (21176112,91334202), the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) and the Swedish Energy Agency.

胆碱类低共融溶剂在CO2捕集与分离中的应用

张盈盈1,2, 吉晓燕2, 陆小华1   

  1. 1 南京工业大学材料化学工程国家重点实验室, 江苏 南京 210009;
    2 瑞典吕勒奥工业大学能源系, 瑞典 吕勒奥 97187
  • 通讯作者: 陆小华
  • 基金资助:

    国家重点基础研究发展计划项目(2013CB733501);国家自然科学基金项目(21176112,91334202);江苏高校优势学科建设工程;瑞典能源署资助项目。

Abstract: Choline-based deep eutectic solvents (DESs) are a new class of ionic liquids. With similar properties to ionic liquids, choline-based DESs have the advantages of easy synthesis, low price, low toxicity and biodegradability. In this work, the properties of choline-based DESs related to CO2 capture and separation were investigated, such as gas solubility, CO2 absorption-desorption, density, thermal stability, viscosity and surface tension. The influence of the structure of choline-based DESs on their properties were analyzed. The comparison of choline-based DESs with traditional ionic liquid showed that choline-based DESs could be used as absorbents for CO2 capture and separation due to high CO2 solubility and low viscosity. However, more research needs to be done before commercial application, for example, CO2 selectivity compared to other components in gas mixtures, surface tension as well as thermal-stability.

Key words: choline-based deep eutectic solvents, CO2 capture, separation, ionic liquids

摘要: 胆碱类低共融溶剂是一种新型的离子液体。它不仅具有传统离子液体的优点,还具有价格低廉、低毒、生物可降解等优势。对胆碱类低共融溶剂在CO2捕集与分离中所涉及的物理性质,如气体的溶解度、CO2的吸收-解吸、密度、稳定性、黏度和表面张力等进行考察,并分析了胆碱类低共融溶剂的结构对各物性的影响。通过与传统离子液体的对比,胆碱类低共融溶剂在CO2捕集与分离中的应用具有一定的优势,如CO2溶解度高,黏度低。然而,胆碱类低共融溶剂在气体的选择性分离、表面张力等的研究还不足,且热稳定性方面还存在瓶颈,因此,其在CO2捕集和分离中的应用还有待进一步探讨。

关键词: 胆碱类低共融溶剂, 二氧化碳捕集, 分离, 离子液体

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