| Poly(amide-6-b-ethylene oxide)/SAPO-34 mixed ma-trix membrane for CO2separation |
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| 引用本文： | Dan Zhao,Jizhong Ren,Hui Li,Kaisheng Hua,Maicun Deng. Poly(amide-6-b-ethylene oxide)/SAPO-34 mixed ma-trix membrane for CO2separation[J]. 天然气化学杂志, 2014, 0(2): 227-234 |
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| 作者姓名： | Dan Zhao Jizhong Ren Hui Li Kaisheng Hua Maicun Deng |
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| 作者单位： | [1]National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China [2]University of Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | This work was supported by the National Science and Technology Planning Project （No. 2011BAC08B00） and the National High Technology Research and Development Program of China （863 Program） （No.2012AA03A611）. |
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| 摘 要： | In this paper, poly（amide-6-b-ethylene oxide） （Pebax1657）/SAPO-34 mixed matrix membranes （MMMs） were prepared by solvent-evaporation method with acetic acid as a novel solvent. CO2, N2, CH4 and H2 permeation properties were investigated, and the physical properties of Pebax/SAPO-34 MMMs were characterized by XRD and SEM. At low SAPO-34 content, it was homogeneously distributed in the Pebax ma- trix, and then precipitated and agglomerated at high SAPO-34 content. The crystallinity of Pebax phase in Pebax/SAPO-34 MMMs decreased initially and then rebounded as a result of phase separation. With the increase of transmembrane pressure difference, CO2 permeability was en- hanced due to the effect of pressure-induced plasticization. Owing to the happening of stratification, the CO2 permeability of Pebax/SAPO-34 MMMs （50 wt% SAPO-34） increased to 338 Barrer from 111 Barrer of pristine Pebax, while the selectivities of CO2/CH4 and CO2/N2 were almost unchanged. Compared with the pristine Pebax, the gas separation performances of Pebax/SAPO-34 MMMs were remarkably enhanced.
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| 关 键 词： | SAPO-34 环氧乙烷 基质膜 相分离 CO 酰胺 嵌段 混合 |
Poly（amide-6-b-ethylene oxide）/SAPO-34 mixed matrix membrane for CO2 separation |
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| 《Journal of Energy Chemistry》. Poly（amide-6-b-ethylene oxide）/SAPO-34 mixed matrix membrane for CO2 separation[J]. Journal of Natural Gas Chemistry, 2014, 0(2): 227-234 |
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| Authors: | 《Journal of Energy Chemistry》 |
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| Abstract: | In this paper, poly(amide-6-b-ethylene oxide)(Pebax1657)/SAPO-34 mixed matrix membranes(MMMs) were prepared by solvent-evaporation method with acetic acid as a novel solvent. CO2, N2, CH4and H2permeation properties were investigated, and the physical properties of Pebax/SAPO-34 MMMs were characterized by XRD and SEM. At low SAPO-34 content, it was homogeneously distributed in the Pebax matrix, and then precipitated and agglomerated at high SAPO-34 content. The crystallinity of Pebax phase in Pebax/SAPO-34 MMMs decreased initially and then rebounded as a result of phase separation. With the increase of transmembrane pressure difference, CO2permeability was enhanced due to the effect of pressure-induced plasticization. Owing to the happening of stratification, the CO2permeability of Pebax/SAPO-34MMMs(50 wt% SAPO-34) increased to 338 Barrer from 111 Barrer of pristine Pebax, while the selectivities of CO2/CH4and CO2/N2were almost unchanged. Compared with the pristine Pebax, the gas separation performances of Pebax/SAPO-34 MMMs were remarkably enhanced. |
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| Keywords: | Pebax SAPO-34 mixed matrix membrane CO2 separation |
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