Pebax-based composite membranes with high gas transport properties enhanced by ionic liquids for CO2 separation
文献类型：期刊论文
| 作者 | Li, Mengdie1,2; Zhang, Xiangping1; Zeng, Shaojuan1; Bai, Lu1; Gao, Hongshuai1; Deng, Jing1,2; Yang, Qingyuan3; Zhang, Suojiang1 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2017 |
| 卷号 | 7期号:11页码:6422-6431 |
| ISSN号 | 2046-2069 |
| 英文摘要 | Membrane-based separation technology has been reported as one of the possible methods to efficiently and economically separate carbon dioxide (CO2). To provide synergistic enhancements in the gas separation performance, organic polymer (Pebax 1657), zeolite imidazolate framework-8 (ZIF-8) nanoparticles, and ionic liquid (IL) have been integrated to develop three-component composite membranes. To achieve high separation performance of three-component membranes, the effects of IL anions and ZIF-8 content on gas permeability and selectivity were investigated first. The ILs were 1-butyl- 3-methyl imidazolium ([Bmim]) cation based on different anions of bis(trifluoromethylsulfonyl) imide ([NTf2]), dicyanamide ([DCA]), and tetrafluoroborate ([BF4]). Gas transport properties of all the prepared membranes were investigated at 23 degrees C and 1 bar. The results showed that the anion of IL is a key factor to determine the CO2 permeability of the membranes, which is similar to the principle of CO2 solubility in pure ILs. In addition, ZIF-8 could increase both CO2 diffusivity and solubility coefficients of the Pebax/ZIF-8 membranes, resulting in a two-fold increase in the CO2 permeability. For the Pebax/ ZIF-8(15%)/[Bmim][NTf2] membranes, it has been revealed that [Bmim][NTf2] acts as a low molecular weight additive, leading to a more amorphous structure and a higher FFV (fractional free volume) of the membranes, which are beneficial for gas diffusion. The addition of IL can improve the compatibility between the inorganic particles and the polymer matrix; thus, the non-selective voids decrease, which leads to a higher CO2/N-2 selectivity. The CO2 permeability of the Pebax/ZIF-8(15%)/IL(80%) membrane was 4.3 times that of the pure Pebax membrane without sacrificing the CO2/N-2 selectivity. Therefore, the high gas transport properties of the Pebax/ZIF-8/IL membranes make them promising candidates for CO2-effective separation materials. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | MIXED-MATRIX MEMBRANES ; GLYCOL DIACRYLATE) ; FLUE-GAS ; CAPTURE ; SOLUBILITY ; PERFORMANCE ; ZEOLITE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000393755100030 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21897]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 3.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mengdie,Zhang, Xiangping,Zeng, Shaojuan,et al. Pebax-based composite membranes with high gas transport properties enhanced by ionic liquids for CO2 separation[J]. RSC ADVANCES,2017,7(11):6422-6431. |
| APA | Li, Mengdie.,Zhang, Xiangping.,Zeng, Shaojuan.,Bai, Lu.,Gao, Hongshuai.,...&Zhang, Suojiang.(2017).Pebax-based composite membranes with high gas transport properties enhanced by ionic liquids for CO2 separation.RSC ADVANCES,7(11),6422-6431. |
| MLA | Li, Mengdie,et al."Pebax-based composite membranes with high gas transport properties enhanced by ionic liquids for CO2 separation".RSC ADVANCES 7.11(2017):6422-6431. |
入库方式： OAI收割
来源：过程工程研究所
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