化工进展 ›› 2020, Vol. 39 ›› Issue (6): 2235-2240.DOI: 10.16085/j.issn.1000-6613.2020-0131

• 专栏:化工分离过程 • 上一篇    下一篇

官能化的金属有机框架在气体小分子分离中的应用

李积慧(), 陈建新()   

  1. 河北工业大学化工学院,天津 300130
  • 出版日期:2020-06-05 发布日期:2020-06-16
  • 通讯作者: 陈建新
  • 作者简介:李积慧(1968—),女,博士,研究方向为复杂体系中微量组分的快速分析。E-mail:lijihui28@163.com
  • 基金资助:
    河北省自然科学基金面上项目(B2015202358);国家自然科学基金(21476059)

Application of functionalized metal-organic framework on separation of small gas molecules

Jihui LI(), Jianxin CHEN()   

  1. School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
  • Online:2020-06-05 Published:2020-06-16
  • Contact: Jianxin CHEN

摘要:

金属有机框架是由金属中心与有机配体自组装形成的一类结构可设计的新型多孔材料。吸附分离是金属有机框架的重要用途之一。本文介绍了以金属有机框架为多孔平台设计合成具有目标导向的官能化金属有机框架的途径以及官能化金属有机框架在二氧化碳与氮气、甲烷分离,烷烃与烯烃分离,低碳烷烃等小分子气体分离纯化中的作用。表明官能化的金属有机框架由于官能团活性位点的存在,在二氧化碳、烯烃、烷烃等气体小分子分离中相对未经修饰的金属有机框架具有更高的分离选择性。官能化的金属有机框架的目标导向使其在化工分离领域具有更广阔的应用前景。目前材料合成难以量产限制了官能化的金属有机框架在化工分离方面的普及,随着合成方法的不断简化官能化金属有机框架在化工分离中会有更广泛的应用。

关键词: 金属有机框架, 官能化, 吸附, 分离, 目标导向, 气体小分子

Abstract:

Metal-organic framework is one kind of novel porous material with self-assembly of metal center and organic ligand. Adsorption and separation is one of the important usages of metal-organic framework. This paper introduced the ways to design and synthesize functionalized metal-organic framework with goal-directed based on metal-organic framework as porous platform, and the role of functionalized metal-organic frameworks in the separation of carbon dioxide from nitrogen and methane, as well as alkane from olefin, and the separation and purification of low-carbon alkanes and other small molecules gas. The results showed that the functionalized metal-organic framework had higher separation selectivity than the unmodified metal-organic framework in the separation of carbon dioxide, olefins, alkanes and other small gas molecules due to the existence of active sites from functional groups. The goal-directed of functionalized metal-organic framework makes it have a broader application prospect in the field of chemical separation. At present, the difficulty in mass production of material synthesis limited the popularity of functionalized metal-organic frameworks in chemical separation. With the continuous simplification of synthesis methods, the functionalized metal-organic frameworks would be widely used in chemical separation.

Key words: metal-organic framework, functionalization, adsorption, separation, goal-directed, small gas molecules

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