Highly Selective Benzimidazole-Based Polyimide/Ionic Polyimide Membranes for Pure- and Mixed-Gas CO2/CH4 Separation
文献类型：期刊论文
| 作者 | Xie, Wei1,3; Jiao, Yang1; Cai, Zhili1; Liu, Hongyan1; Gong, Lili1; Lai, Wei1; Shan, Linglong1; Luo, Shuangjiang1,2 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 282页码:9 |
| 关键词 | Polyimides Ionic polyimides Hydrogen bonding Mixed-gas permeation Nature gas sweetening |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2021.120091 |
| 英文摘要 | This paper reports two new series of benzimidazole functionalized polyimides and ionic polyimides for highly selective membranes with great potential for natural gas sweetening. It has been demonstrated that both the -NH groups in the benzimidazole moieties and the corresponding ionic groups after N-quaternization tighten the microporous structure and restrict polymer chain mobility through hydrogen bonding and electrostatic interaction. The BET surface areas and d-spacing values decrease with benzimidazole molar content or the degree of ionization. Consequently, a linear correlation between CO2 permeability coefficients with benzimidazole molar content or degree of ionization was observed due to the decrease of CO2 diffusivity, and the monotonic increase of CO2/CH4 selectivities is ascribed to the increase of both diffusivity selectivity and solubility selectivity. The benzimidazole-based copolyimide and the ionic copolyimide membranes exhibited high CO2/CH4 selectivity under high-pressure mixed-gas conditions. In particular, the copolyimide PI-0.75 membrane displayed a mixed gas CO2 permeability of 27 Barrer and CO2/CH4 selectivity of 47 at 20 bar total pressure. The performance was much higher than those of the state-of-the-art commercial cellulose triacetate membranes for natural gas upgrading. The facile polymer synthesis and microporosity tunability, as well as the excellent mixed-gas separation performance, render the copolyimide membranes in this study promising towards economic membrane mediated natural gas upgrading. |
| WOS关键词 | HOLLOW-FIBER MEMBRANES ; TRANSPORT PROPERTIES ; CROSS-LINKING ; PERMEATION PROPERTIES ; PLASTICIZATION ; POLYMERS ; PERMEABILITY |
| 资助项目 | National Natural Science Foundation of China[22008243] ; National Natural Science Foundation of China[22090063] ; Dalian National Laboratory for Clean Energy (DNL) Cooperation Fund of CAS[DNL201917] ; Beijing Nova Program of Science and Technology[Z191100001119107] ; International Partner Program of CAS[122111KYSB20200035] ; International Partner Program of CAS[122111KYSB20190060] ; Project of Stable Support for Youth Team in Basic Research Field, CAS[YSBR-017] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000720836500007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Dalian National Laboratory for Clean Energy (DNL) Cooperation Fund of CAS ; Beijing Nova Program of Science and Technology ; International Partner Program of CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/51067]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Luo, Shuangjiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc,State Key, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Wei,Jiao, Yang,Cai, Zhili,et al. Highly Selective Benzimidazole-Based Polyimide/Ionic Polyimide Membranes for Pure- and Mixed-Gas CO2/CH4 Separation[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,282:9. |
| APA | Xie, Wei.,Jiao, Yang.,Cai, Zhili.,Liu, Hongyan.,Gong, Lili.,...&Luo, Shuangjiang.(2022).Highly Selective Benzimidazole-Based Polyimide/Ionic Polyimide Membranes for Pure- and Mixed-Gas CO2/CH4 Separation.SEPARATION AND PURIFICATION TECHNOLOGY,282,9. |
| MLA | Xie, Wei,et al."Highly Selective Benzimidazole-Based Polyimide/Ionic Polyimide Membranes for Pure- and Mixed-Gas CO2/CH4 Separation".SEPARATION AND PURIFICATION TECHNOLOGY 282(2022):9. |
入库方式： OAI收割
来源：过程工程研究所
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