Chemical Industry and Engineering Progress ›› 2021, Vol. 40 ›› Issue (9): 5107-5117.DOI: 10.16085/j.issn.1000-6613.2021-0673

Previous Articles     Next Articles

Development of metal-organic frameworks in adsorptive separation of CH4-N2

MA Lei1(), ZHANG Feifei1, SONG Zhiqiang1, YANG Jiangfeng1,2(), LI Libo1,2, LI Jinping1,2   

  1. 1.Research Institute of Special Chemicals, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
    2.Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan 030024, Shanxi, China
  • Received:2021-03-31 Revised:2021-05-13 Online:2021-09-13 Published:2021-09-05
  • Contact: YANG Jiangfeng

金属有机骨架材料用于吸附分离CH4和N2的研究进展

马蕾1(), 张飞飞1, 宋志强1, 杨江峰1,2(), 李立博1,2, 李晋平1,2   

  1. 1.太原理工大学化学化工学院精细化工研究所,山西 太原 030024
    2.气体能源高效清洁利用山西省重点实验室,山西 太原 030024
  • 通讯作者: 杨江峰
  • 作者简介:马蕾(1995—),男,硕士研究生,研究方向为甲烷脱氮。E-mail:malei0516@link.tyut.edu.cn
  • 基金资助:
    国家自然科学基金(U20B6004)

Abstract:

The development and utilization of unconventional natural gas can effectively alleviate the energy problems caused by the shortage of conventional natural gas and reduce the greenhouse effect caused by the wanton emissions of it. Whether the enrichment of low-concentration coalbed methane or the upgrading of low-quality natural gas, the separation of CH4 and N2 needs to be resolved. The adsorption and separation of methane and nitrogen is extremely challenging because of very similar kinetic diameters of them. As the new type porous materials, metal-organic frameworks (MOFs) aroused widespread concern due to their diversified structures and functions. This paper mainly reviewed the research progress of MOFs materials in the adsorption and separation of CH4 and N2 from the CH4 and N2 selective MOFs adsorption materials in recent years. The factors affecting the separation of methane and nitrogen were discussed. The relationship between the adsorption and separation mechanism and the structure and performance of MOFs was summarized and analyzed in detail. A method to improve the selectivity of CH4 and N2 was proposed, which required the synergy of appropriate pore size and weak polar surface properties or favorable framework structure. Finally, the application prospects and development trends of MOFs in the field of methane enrichment and purification were prospected.

Key words: metal-organic frameworks, adsorptive separation, coal-bed methane, natural gas, methane, nitrogen

摘要:

非常规天然气的利用不仅可以有效缓解常规天然气不足带来的能源问题,而且可以降低其肆意排放带来的温室效应,无论是低浓度煤层气的提浓还是低品质天然气的提质都需要解决甲烷与氮气的分离难题。基于金属有机骨架(MOFs)材料结构和功能均呈多样化的特色,本文主要从CH4选择型MOFs吸附材料和N2选择型MOFs吸附材料两个方面,综述了近年来MOFs材料在CH4与N2吸附分离方面的研究进展,讨论了影响二者分离的影响因素,并对吸附与分离机理与MOFs结构和性能关联进行了详细的总结与分析,提出了CH4与N2选择性提升的方法,即需要合适的孔道尺寸与弱极性表面性质或有利骨架结构的协同作用,最后展望了MOFs材料在甲烷富集和纯化领域的应用前景和发展趋势。

关键词: 金属有机骨架材料, 吸附分离, 煤层气, 天然气, 甲烷, 氮气

CLC Number: 

京ICP备12046843号-2;京公网安备 11010102001994号
Copyright © Chemical Industry and Engineering Progress, All Rights Reserved.
E-mail: hgjz@cip.com.cn
Powered by Beijing Magtech Co. Ltd