| 皂化P507-HCl-煤油体系萃取镨钕 |
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| 引用本文： | 刘晶,王运东.皂化P507-HCl-煤油体系萃取镨钕[J].化工学报,2014,65(1):264-270. |
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| 作者姓名： | 刘晶 王运东 |
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| 作者单位： | 清华大学化学工程系, 化学工程联合国家重点实验室, 北京 100084 |
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| 基金项目： | 国家重点基础研究发展计划项目（2012CBA01203）。 |
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| 摘 要： | 通过平衡实验考察了皂化P507-HCl-煤油体系中初始水相pH、萃取剂P507皂化度以及P507浓度对单一稀土元素萃取和镨（Pr）钕（Nd）双元素萃取平衡的影响，确定皂化反应产物组成和最佳分离条件，并于最佳分离条件下在膜分散微萃取器中分离镨（Pr）钕（Nd）。结果表明，利用膜分散微萃取器萃取分离镨（Pr）钕（Nd）的萃取率和有效分离因子可与平衡实验相当，在膜分散微萃取器中反应时间大大缩短至2.5 s左右，提高了传质速率。
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| 关 键 词： | 皂化P507-HCl-煤油体系 萃取 平衡 分离 膜分散微萃取 |
| 收稿时间： | 2013-07-01 |
| 修稿时间： | 2013-11-26 |
Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system |
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| LIU Jing,WANG Yundong.Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system[J].Journal of Chemical Industry and Engineering(China),2014,65(1):264-270. |
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| Authors: | LIU Jing WANG Yundong |
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| Affiliation: | State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | The effect of initial aqueous pH, concentration of P507 and saponification degree of P507 was investigated for P507-HCl-kerosene system, not only for individual rare earth elements, but also for both praseodymium(Ⅲ) and neodymium(Ⅲ). Extraction in a membrane dispersion micro-extractor was performed after determining the product formed by saponification reaction and optimized separation conditions. Using membrane dispersion micro-extractor could increase mass transfer rate and shorten reaction time to 2.5 s with similar extraction rate and separation factor achieved by shake flask tests. |
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| Keywords: | saponified P507-HCl-kerosene system extraction equilibrium separation membrane dispersion micro-extractor |
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