Acta Chimica Sinica ›› 2020, Vol. 78 ›› Issue (5): 397-406.DOI: 10.6023/A20030081 Previous Articles     Next Articles



郭振彬a, 张媛媛b, 冯霄a   

  1. a 北京理工大学化学与化工学院 北京 100081;
    b 北京理工大学前沿交叉科学研究院 北京 100081
  • 投稿日期:2020-03-21 发布日期:2020-04-21
  • 通讯作者: 张媛媛
  • 作者简介:郭振彬,北京理工大学化学与化工学院,2017级在读硕士研究生(化学专业),本科毕业于青岛科技大学(应用化学专业),现主要从事晶态多孔材料的合成与应用研究;张媛媛,北京理工大学前沿交叉科学研究院,预聘助理教授.2013年~2019年在北京理工大学化学与化工学院获得博士学位,2017年~2018年在美国西北大学化学系访问学习(联合培养博士),2019年就职于北京理工大学前沿交叉科学研究院.主要从事金属有机框架(MOF)、共价有机框架(COF)等功能多孔材料的可控制备和柔性加工,及其在分离、催化、智能响应等领域的应用研究;冯霄,北京理工大学博士生导师,化学与化工学院教授,国家自然科学基金优秀青年科学基金获得者.分别于2008年和2013年于北京理工大学材料学院取得本科与博士学位,攻读博士期间以联合培养博士研究生身份留学于日本国家自然科学研究机构——分子科学研究所.2013年就职于北京理工大学化学与化工学院.主要从事关于共价有机框架材料等晶态多孔材料的构效关系研究以及膜分离相关领域应用研究.
  • 基金资助:

Separation and Purification of C4~C6 Hydrocarbons Using Metal-organic Frameworks

Guo Zhenbina, Zhang Yuanyuanb, Feng Xiaoa   

  1. a School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081;
    b Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081
  • Received:2020-03-21 Published:2020-04-21
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos. 21922502, 21674012).

As important chemical raw materials and energy source, C4~C6 hydrocarbons are mainly used to produce polymer rubber, plastics and high-quality gasoline, which requires high purity of the raw materials. For example, the purity requirement in 1,3-butadiene polymerization reactor is higher than 99.5%. When producing butyl rubber, tert-butylamine, pivalic acid, etc., the purity of isobutylene should surpass 99%. In the traditional petrochemical industry, C4~C6 hydrocarbons are mostly separated and purified through distillation, yet suffering from large energy consumption, high equipment cost and poor economic benefits. Adsorption separation with solid adsorbents can not only reduce energy cost and environmental footprints, but also improve separation efficiency. Metal-organic frameworks (MOFs) are a class of crystalline porous materials assembled from metal ions or clusters and organic linkers. Compared with zeolite, activated carbon and silica gel, MOFs feature high porosity, well-defined open channels, rich functional groups and diverse structures, showing great potentials in gas storage and separation, sensing, catalysis, photoelectric devices, drug release and delivery. Up to now, there have been many reports on separation and purification of C4~C6 hydrocarbons using MOFs by different mechanisms. Specifically, highly selective separation can be achieved by precisely adjusting the size and shape of the MOF channels to match the size of the target molecule. Besides, selecting MOFs with specific functional groups, open metal sites or flexible skeletons to regulate the interactions between the gas molecules and backbone, can also achieve efficient separation. This review introduced the importance of C4~C6 hydrocarbons separation and summarized the current research progress of using MOFs to separate and purify C4~C6 hydrocarbons. In addition, we also summed up the challenges of using MOFs as industrial adsorbents and pointed out the possible research directions in the future, which may provide ideas for designing new MOFs with high performance for crucial separation processes.

Key words: metal-organic frameworks, C4~C6 hydrocarbons, adsorption, separation, purification