| 膜基萃取中钕、钐的传质及界面反应动力学 |
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| 引用本文： | 张凤君,林学钰,刘虹,罗芳,吴庸烈,李德谦.膜基萃取中钕、钐的传质及界面反应动力学[J].中国稀土学报,2001,19(3):265-267. |
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| 作者姓名： | 张凤君 林学钰 刘虹 罗芳 吴庸烈 李德谦 |
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| 作者单位： | 1. 北京师范大学环境科学研究所环境模拟与污染控制国家重点实验室，北京100875
2. 中国科学院长春应用化学研究所稀土及物理开放实验室，吉林长春 130022 |
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| 基金项目： | 国家重点基础研究发展规划项目（1998061302）及国家自然科学基金（29771028，29801004）资助项目 |
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| 摘 要： | 采用自制聚偏氟乙烯中空纤维膜吕，在HEH／EHP煤油体系不，对钕，钐的萃取及界面反应进行了研究。结果表明，膜器中的萃取反应与液－液萃取相同，可视为准一级反应。考察了料液酸度，萃取剂浓度，钕，钐离子浓度与萃取速率的关系，获得了相应的反应级数，根据界面反应动力学，得到了动力学方程，速率常数及钕，钐的分离系数。
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| 关 键 词： | 稀土 中空纤维 萃取 传质动力学 钕 钐 界面反应 湿法冶金 分离 |
| 文章编号： | 1000－4343(2001)03－0265－03 |
| 修稿时间： | 2000年11月29 |
Study on Transfer and
Interfacial Kinetics of Neodymium and Samarium in Membrane Based Extraction |
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| ZHANG Feng jun ,LIN Xue yu ,LIU Hong ,LUO Fang ,LI De qian ,WU Yong lie.Study on Transfer and
Interfacial Kinetics of Neodymium and Samarium in Membrane Based Extraction[J].Journal of the Chinese Rare Earth Society,2001,19(3):265-267. |
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| Authors: | ZHANG Feng jun LIN Xue yu LIU Hong LUO Fang LI De qian WU Yong lie |
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| Institution: | ZHANG Feng jun 1,LIN Xue yu 1,LIU Hong 1,LUO Fang 2,LI De qian 2,WU Yong lie 2 |
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| Abstract: | Extraction and interfacial kinetics of Nd 3 and Sm 3 with HEH/EHP kerosene in a hollow fiber membrane extractor were studied. The results show that the extraction reactions in the hollow fiber membrane extractor are the same as those in the liquid liquid extraction, which can be expressed as a quasi first order reaction. The effect of acidity in aqueous phase, concentrations of extractant, Nd 3 and Sm 3 on extraction rate are discussed and the corresponding reaction series are obtained. As a result, the reaction equations, reaction rate constants and the separation factor between Sm 3 and Nd 3 are obtained. |
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| Keywords: | rare earths hollow fiber membrane extraction transfer kinetics |
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