| 酚醛树脂基炭膜的制备与性能研究 |
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| 引用本文： | 杨立军,张金海.酚醛树脂基炭膜的制备与性能研究[J].沈阳农业大学学报,2011,42(2):247-250. |
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| 作者姓名： | 杨立军 张金海 |
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| 作者单位： | 沈阳农业大学高职学院,沈阳,110122 |
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| 摘 要： | 采用真空涂膜法,以一定浓度的商用酚醛树脂为前驱体在多孔陶瓷管上制备复合炭膜,并考察真空度对复合膜气体渗透性能的影响。结果表明,采用真空法可以在载体表面形成均匀的炭膜,而传统提拉法较难获得连续的炭膜,涂膜真空度为0.6MPa更利于高性能炭膜的制备。对真空法制备的炭膜进行单组份气体渗透测试,发现随着涂膜真空度的增加,复合膜的气体渗透速率显著减低,而理想选择性出现峰值。等摩尔CO2/CH4混合气的渗透测试发现:室温下炭膜的CO2渗透速率达到1.4×10-7mol.Pa-1.m-2.s-1,αCO2/CH4达到48.3,高于其努森值。扫描电镜测试表明,此复合膜表面均匀、连续,膜厚度大约4μm,与载体结合紧密。
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| 关 键 词： | 酚醛树脂 炭膜 真空辅助 气体分离 |
Preparation of Phenolic-resin-based Carbon Membrane and Its Separation Performance |
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| YANG Li-jun,ZHANG Jin-hai.Preparation of Phenolic-resin-based Carbon Membrane and Its Separation Performance[J].Journal of Shenyang Agricultural University,2011,42(2):247-250. |
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| Authors: | YANG Li-jun ZHANG Jin-hai |
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| Institution: | YANG Li-jun,ZHANG Jin-hai (College of Vocation,Shenyang Agricultural University,Shenyang 110122,China) |
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| Abstract: | Vacuum-assisted coating(VC) was employed to prepare carbon membrane on porous α-Al2O3 tube using commercial phenol resin as precursor,and the effect of vacuum degree was investigated.Results showed that the VC method was more effective(vacuum degree = 0.6 MPa) for the preparation of uniform carbon membrane compared with the conventional method.Single-gas permeation test indicated that with the increase of vacuum degree,the gas permeance decreased and the selectivity exhibited the maximum.The CO2/CH4(50/50) mixture permeation test showed that the carbon membrane had CO2 permeance of 1.4×10-7 mol·Pa-1·m-2·s-1 and CO2/CH4 selectivity of 48.3,higher than the Knudsen value.The scanning electron microscope revealed that the membrane was dense,continuous,with a thickness of 4 μm. |
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| Keywords: | phenol ic-resin carbon membrane vacuum-assisted gas separation |
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