1. Hydrophobic-functionalized ZIF-8 nanoparticles incorporated PDMS membranes for high-selective separation of propane/nitrogen.
- Author
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Yuan, Jianwei, Li, Qianqian, Shen, Jie, Huang, Kang, Liu, Gongping, Zhao, Jing, Duan, Jingui, and Jin, Wanqin
- Subjects
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COMPOSITE membranes (Chemistry) , *METAL ion absorption & adsorption , *HYDROPHOBIC interactions , *LIGAND exchange reactions , *HYDROCARBONS - Abstract
It is still a great challenge to prepare high performance mixed matrix membranes (MMMs) because of the difficulty in finely tuning the compatibility between filler and organic phases. In this work, ZIF-8 nanoparticles hydrophobically functionalized by 5, 6-dimethylbenzimidazole (DMBIM) via shell ligand exchange (SLE) reaction were incorporated into polydimethylsiloxane (PDMS) matrix to fabricate defect-free MMMs. Organic--inorganic interface compatibility was realized because of more abundant organic ligands from DMBIM. The effects of different loadings on membrane microstructure and gas separation performance were investigated systematically. A significantly enhanced C3H8/N2 separation performance with C3H8 permeability over 2.10 × 104 Barrer (91 % higher than that of pure PDMS membrane) and C3H8/N2 selectivity of 99.5 (116 % higher than that of pure PDMS membrane) were achieved. Additionally, the as-prepared membrane also exhibited excellent stability during long term operation. © 2016 Curtin University of Technology and John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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