以BTDA-ODA型聚酰亚胺为基质膜材料,2-甲基咪唑锌(ZIF-8)为掺杂剂,制备了聚酰亚胺基杂化膜(PI/ZIF-8)。运用FT-IR、XRD、SEM和EDS等表征方法,对ZIF-8含量不同的杂化膜的化学结构和微观结构进行了分析,并对杂化膜进行了 CO2和 N2单一气体渗透测试。结果表明,ZIF-8与 PI 两相完全相容且杂化膜对CO2表现出很高的渗透选择性。当 ZIF-8质量分数为7％(PI/7Z)时,CO2的渗透系数为2．79×10－9 mol?m－2 s－1 Pa－1,相应的CO2/N2理想选择性系数达到最大值13．6,远大于努森扩散的分离系数0．79。
Polyimide based hybrid membranes (PI/ZIF-8)were prepared with the BTDA-ODA polyimide mem-branes as matrix materials,the 2-methylimidazole zinc (ZIF-8)as dopants.The FT-IR,XRD,SEM and EDS were used to characterize the chemical structure and microstructure of the hybrid membranes with different con-tent of ZIF-8,and the hybrid membranes were carried out a single gas permeation test of CO2 and N2 .The re-sults showed that:ZIF-8 and PI phases are fully compatible and the hybrid membranes showed high selective permeation on CO2 .When the mass fraction of ZIF-8 was 7% (PI/7Z),the permeability coefficient of CO2 was 2.79×10-9 mol?m-2 s-1 Pa-1 ,the corresponding ideal selectivity coefficient of CO2/N2 is up to the maximum number of 13.6,greater than the separation coefficient of lofty Knudsen diffusion (0.79).
参考文献
| [1] | ZHANG Chunling;ZHANG Qiong;XUE Yanhu;LI Guomin;LIU Fangfang;QIU Xuepeng;JI Xiangling.Effect of Draw Ratio on the Morphologies and Properties of BPDA/PMDA/ODA Polyimide Fibers[J].高等学校化学研究（英文版）,2014(01):163-167. |
| [2] | Jung-Tsai Chen;Chien-Chung Shih;Ywu-Jang Fu.Zeolite-Filled Porous Mixed Matrix Membranes for Air Separation[J].Industrial & Engineering Chemistry Research,20147(7):2781-2789. |
| [3] | Rijia Lin;Lei Ge;Lei Hou.Mixed Matrix Membranes with Strengthened MOFs/Polymer Interfacial Interaction and Improved Membrane Performance[J].ACS applied materials & interfaces,20148(8):5609-5618. |
| [4] | Sumudu N. Wijenayake;Nimanka P. Panapitiya;Saskia H. Versteeg.Surface Cross-Linking of ZIF-8/Polyimide Mixed Matrix Membranes (MMMs) for Gas Separation[J].Industrial & Engineering Chemistry Research,201321(21):6991-7001. |
| [5] | Qilei Song;S. K. Nataraj;Mina V. Roussenova;Jin Chong Ta;David J. Hughes;Wei Li;Pierre Bourgoin;M. Ashraf Alam;Anthony K. Cheetham;Shaheen A. AI-Muhtaseb;Kasan Sivaniah.Zeolitic imidazolate framework (ZIF-8) based polymer nanocomposite membranes for gas separation[J].Energy & environmental science: EES,20128(8):8359-8369. |
| [6] | Minqi Zhu;Darbha Srinivas;Seemala Bhogeswararao.Catalytic activity of ZIF-8 in the synthesis of styrene carbonate from CO2 and styrene oxide[J].Catalysis Communications,2013:36-40. |
| [7] | Lien T. L. Nguyen;Ky K. A. Le;Hien X. Truong.Metal-organic frameworks for catalysis: the Knoevenagel reaction using zeolite imidazolate framework ZIF-9 as an efficient heterogeneous catalyst[J].Catalysis science & technology,20123(3):521-528. |
| [8] | Ai-Xin Zhu;Rui-Biao Lin;Xiao-Lin Qi.Zeolitic metal azolate frameworks (MAFs) from Zn0/Zn(OH)2and monoalkyl-substituted imidazoles and 1,2,4-triazoles: Efficient synthesesand properties[J].Microporous and mesoporous materials: The offical journal of the International Zeolite Association,2012:42-49. |
| [9] | 刘明明;吕文苗;史秀锋;范彬彬;李瑞丰.不同方法合成的沸石咪唑酯骨架结构材料（ZIF-8）的表征和催化性能[J].无机化学学报,2014(3):579-584. |
| [10] | Kim YK;Park HB;Lee YM.Preparation and characterization of carbon molecular sieve membranes derived from BTDA-ODA polyimide and their gas separation properties[J].Journal of Membrane Science,20051/2(1/2):265-273. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%