| ZIF-76-mbIm膜的制备及其CO2分离研究 |
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| 引用本文： | 毛海棁,金花,李砚硕.ZIF-76-mbIm膜的制备及其CO2分离研究[J].宁波大学学报(理工版),2022,0(2):105-112. |
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| 作者姓名： | 毛海棁 金花 李砚硕 |
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| 作者单位： | 宁波大学 材料科学与化学工程学院, 浙江 宁波 315211 |
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| 基金项目： | 国家自然科学基金青年科学基金（21808113）； |
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| 摘 要： | 采用二次生长法在α-Al2O3载体上制备ZIF-76-mbIm膜, 从纳米晶种的制备、晶种层厚度的优化以及二次生长条件优化3个方面进行调控以制备连续致密的ZIF-76-mbIm膜, 并使用聚二甲基硅氧烷(PDMS)对ZIF-76-mbIm膜进行修饰, 提高膜的机械强度. 使用X射线衍射、扫描电子显微镜对膜的形貌结构进行表征, 通过Wicke-Kallenbach方法测试所得ZIF-76-mbIm膜对CO2/N2二元混合物的分离性能. 结果表明: 经PDMS修饰的ZIF-76-mbIm膜对CO2/N2的分离系数可达15.53, 对应CO2的渗透率为7.98×10-9mol?(m2?s?Pa)-1.
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| 关 键 词： | 金属-有机骨架 ZIF-76-mbIm膜 二次生长 气体分离 |
Preparation and CO2 separation of ZIF-76-mbIm membrane |
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| MAO Haizhuo,JIN Hua,LI Yanshuo.Preparation and CO2 separation of ZIF-76-mbIm membrane[J].Journal of Ningbo University(Natural Science and Engineering Edition),2022,0(2):105-112. |
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| Authors: | MAO Haizhuo JIN Hua LI Yanshuo |
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| Institution: | School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, China |
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| Abstract: | ZIF-76-mbIm membrane is prepared on the α-Al2O3 disk using the secondary growth method. In order to prepare a continuous and dense ZIF-76-mbIm, the ZIF-76-mbIm seed size, the seed layer thickness and also secondary growth conditions are systematically optimized. Further, the as-synthesized ZIF-76-mbIm membranes are coated with polydimethylsiloxane (PDMS) to enhance the mechanical strength. The structure and morphology of the ZIF-76-mbIm membranes are characterized by XRD and SEM, respectively. The separation performance of resultant membranes for CO2/N2 binary mixtures is measured by Wicke-Kallenbach method. Typically, the PDMS/ZIF-76-mbIm membrane exhibits CO2 permeance of 7.98×10-9mol?(m2?s?Pa)-1 and CO2/N2 separation factor of 15.53. |
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| Keywords: | metal-organic frameworks ZIF-76-mbIm membrane secondary growth gas separation |
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