| 乙炔、水蒸气在聚砜膜中渗透行为的研究 |
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| 引用本文： | 郑辉东,赵素英,王良恩.乙炔、水蒸气在聚砜膜中渗透行为的研究[J].福州大学学报(自然科学版),2005,33(1):101-104. |
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| 作者姓名： | 郑辉东 赵素英 王良恩 |
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| 作者单位： | 福州大学化学化工学院,福建,福州,350002 |
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| 基金项目： | 福建省教育厅科研项目;福州大学校科研和教改项目 |
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| 摘 要： | 采用"时间滞后"法测定了乙炔、水蒸气在聚砜膜中的渗透系数、扩散系数和溶解度系数,结果表明:乙炔在膜中的渗透符合双方式模型,渗透活化能为负值;水蒸气在膜中的渗透行为比较特殊,存在溶胀和成簇迁移,渗透活化能为正值;乙炔在膜中的扩散系数和溶解度系数均比水蒸气小,聚砜膜中H2O C2H2选择性在300以上.
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| 关 键 词： | 气体膜分离 乙炔 水蒸气 聚砜 渗透行为 |
| 文章编号： | 1000-2243(2005)01-0101-04 |
| 修稿时间： | 2004年4月20日 |
On the permeation behavior of acetylene and water vapor in dense polysulfone membrane |
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| ZHENG Hui-dong,ZHAO Su-ying,WANG Liang-en.On the permeation behavior of acetylene and water vapor in dense polysulfone membrane[J].Journal of Fuzhou University(Natural Science Edition),2005,33(1):101-104. |
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| Authors: | ZHENG Hui-dong ZHAO Su-ying WANG Liang-en |
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| Institution: | (College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China) |
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| Abstract: | The permeabilities, diffusivities and solubilities of acetylene and water vapor in dense polysulfone membrane were determined by "time lag" method. The permeation behavior of acetylene could be described by dual-mode model and the activation energy for permeation was negative. The permeation of water vapor exhibited some "unusual" behavior including cluster moving , swelling and the activation energy for permeation was positive. Compared with acetylene, water vapor has much bigger solubility and diffusivity. The selectivity of H_2O/C_2H_2 for polysulfone was more than 300. |
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| Keywords: | membrane gas separation acetylene water vapor polysulfone permeation bahavior |
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