An Aromatic Fluoropolymer for Hydrogen Separation from Hydrocarbons

被引：8
作者：
Guan, Jian [1 ]
Lu, Yanqiu [1 ]
Du, Lijun [2 ]
Liang, Canzeng [1 ]
Wu, Ji [1 ]
Li, Dongfei [3 ]
Zhang, Sui [1 ]
机构：
[1] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117576, Singapore
[2] Shanghai Huayi 3F New Mat Co Ltd, 560 Xujiahui Rd, Shanghai 200032, Peoples R China
[3] Keysino Separat Technol Singapore Pte Ltd, 04-05 Singapore Water Exchange, Singapore 608501, Singapore
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2022年 / 43卷 / 06期
关键词：
fluoropolymers; hydrocarbons; hydrogen separation; membranes; plasticization; POSITRON-ANNIHILATION LIFETIME; FREE-VOLUME; GAS-TRANSPORT; VAPOR SORPTION; PERMEATION; MEMBRANES; DIFFUSION; POLYMERS; PERFORMANCE;
D O I：
10.1002/marc.202100796
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Plasticization is a critical challenge in membrane-based gas separation. Here a novel fluoropolymer, poly(trifluoro styrene) (PTFS), is reported for hydrogen separation from hydrocarbons. The polymer structure is first characterized by different techniques such as nuclear magnetic resonance (NMR) and positron annihilation lifetime spectroscopy (PALS). Then, gas separation performances of the polymer are studied. The separation of H-2/CH4 is found to outperform most other fluorinated polymers and surpass the Robeson 1991 upper bound. Furthermore, the polymer demonstrates stable or increasing selectivity for hydrogen over hydrocarbons (e.g., CH4, C2H6, and C3H8) at higher pressure, suggesting excellent resistance to plasticization.
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页数：6
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