化工学报 ›› 2025, Vol. 76 ›› Issue (5): 2410-2418.DOI: 10.11949/0438-1157.20241208

• 分离工程 • 上一篇    

不同粒径CAU-1/PI混合基质膜的构建与H2/CO2分离性能研究

顾栋1(), 皮行健2, 张叠2, 张瑛2()   

  1. 1.中煤科工重庆设计研究院,重庆 400042
    2.中国石油大学(北京)新能源与材料学院,北京 102200
  • 收稿日期:2024-10-30 修回日期:2025-02-04 出版日期:2025-05-25 发布日期:2025-06-13
  • 通讯作者: 张瑛
  • 作者简介:顾栋(1983—),男,学士,高级工程师,108188933@qq.com

Construction and H2/CO2 separation performance evaluation of CAU-1/PI mixed matrix membrane with different nanoparticle sizes

Dong GU1(), Xingjian PI2, Die ZHANG2, Ying ZHANG2()   

  1. 1.China Coal Science and Engineering Chongqing Design and Research Institute, Chongqing 400042, China
    2.College of New Energy and Materials, China University of Petroleum, Beijing 102200, China
  • Received:2024-10-30 Revised:2025-02-04 Online:2025-05-25 Published:2025-06-13
  • Contact: Ying ZHANG

摘要:

基于金属有机骨架(MOFs)的混合基质膜兼具聚合物与MOFs材料的性能优势,是H2/CO2气体分离领域的研究热点。利用原位聚合法将不同粒径的CAU-1分散到聚酰亚胺(PI)基质材料中,采用XRD、SEM、TG、FTIR等手段对MOFs填料和混合基质膜进行表征,探究粒径大小和热处理温度对CAU-1/PI混合基质膜的H2/CO2分离性能的影响。结果表明,相较于纯聚合物膜,混合基质膜的分离效果有明显改善,原位聚合法能够显著提高MOF与聚合物的界面相容性,CAU-1粒径和热处理温度优化后的PI/CAU-1膜的H2/CO2分离因子可达8.4。

关键词: 混合基质膜, 金属有机骨架, 粒径, 气体分离

Abstract:

Mixed matrix membranes based on metal organic frameworks (MOFs) have the performance advantages of both polymers and MOFs materials, and are research hotspot in the field of H2/CO2 gas separation. In this paper, CAU-1 with different particle sizes was dispersed into polyimide (PI) substrate by in-situ polymerization, and MOFs fillers and mixed matrix films were characterized by XRD, SEM, TG, FTIR, etc., to explore the effects of particle size and heat treatment temperature on H2/CO2 separation performance. The results showed that, compared with the pure polymer membrane, the separation effect of mixed matrix membrane was significantly improved. In-situ polymerization could significantly improve the interfacial compatibility of MOF and polymer, and the separation factor of H2/CO2 of PI/CAU-1 membrane after optimization of CAU-1 particle size and heat treatment temperature could reach 8.4.

Key words: mixed matrix membrane, metal-organic frameworks (MOFs), particle size, gas separation

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