Optimization of a MOF Blended with Modified Polyimide Membrane for High-Performance Gas Separation

Membranes

卷:12

Qingji Wang¹  Wenqiang Ma²  Shuangping Xu²  Hongge Jia²  Mingyu Zhang²  Pengfei Jiang²  Yushu Zhang²  Yanqing Qu²  Shaobin Li²  Guiming Su³  Guoxing Yang⁴ 

[1] CNPC Reasearch Institute of Safety & Environment Technology, Changping District, Beijing 102249, China;

[2] Heilongjiang Provinces Key Laboratory of Polymeric Composite Materials, Department of Chemical and Chemical Engineering, Qiqihar University, Wenhua Street, Qiqihar 161006, China;

[3] Institute of Advanced Technology, Heilongjiang Academy of Sciences, No. 52, Renhe Street, Nangang District, Harbin 150009, China;

[4] Synthetic Resin Laboratory, Daqing Petrochemical Research Center, Petrochemical Research Institute, No. 2, Chengxiang Road, Wolitun, Longfeng District, Daqing 163714, China;

关键词: mixed matrix membrane;    metal-organic frameworks;    polyimide;    gas separation;   

DOI  :  10.3390/membranes12010034

来源: DOAJ

【 摘 要 】

The preparation, characterization and gas separation properties of mixed matrix membranes (MMMs) were obtained from polyimide capped with ionic liquid and blended with metal-organic frameworks (MOFs). The synthesized MOF was amine functionalized to produce UiO-66-NH₂, and its amino group has a higher affinity for CO₂. Mixed matrix membranes exhibited good membrane forming ability, heat resistance and mechanical properties. The polyimide membrane exclusively capped by ionic liquid exhibited good permselectivity of 74.1 for CO₂/CH₄, which was 6.2 times that of the pure polyimide membrane. It is worth noting that MMM blended with UiO-66-NH₂ demonstrated the highest ideal selectivity for CO₂/CH₄ (95.1) with a CO₂ permeability of 7.61 Barrer, which is close to the 2008 Robeson upper bound. The addition of UiO-66-NH₂ and ionic liquid enhanced the permselectivity of MMMs, which may be one of the promising technologies for high performance CO₂/CH₄ gas separation.

【 授权许可】

Unknown