ZIF-76-mbIm膜的制备及其CO2分离研究
PDF下载 (239)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),2022,35(2):105-112.DOI:
MAO Haizhuo,JIN Hua,LI Yanshuo.Preparation and CO2 separation of ZIF-76-mbIm membrane[J].Journal of Ningbo University(Natural Science & Engineering Edition),2022,35(2):105-112.DOI:
| Title: | Preparation and CO2 separation of ZIF-76-mbIm membrane |
| 作者: | 毛海棁, 金 花, 李砚硕 |
| Author(s): | MAO Haizhuo, JIN Hua, LI Yanshuo |
| 关键词: | 金属-有机骨架; ZIF-76-mbIm膜; 二次生长; 气体分离 |
| Keywords: | metal-organic frameworks; ZIF-76-mbIm membrane; secondary growth; gas separation |
| 分类号: | TB3 |
| 文献标识码: | A |
| 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. |
| 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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| 备注/Memo: | 收稿日期: 2021－05－26. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金青年科学基金（21808113）. 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/第一作者: 毛海棁（1996－）, 男, 浙江杭州人, 在读硕士研究生, 主要研究方向: 气体分离. E-mail: 278477537@qq.com *通信作者: 李砚硕（1978－）, 男, 河南郑州人, 教授, 主要研究方向: 先进分离材料. E-mail: liyanshuo@nbu.edu.cn |
