| N,N′-二(十二烷基)乙二胺二乙酸萃取镨的研究 |
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| 引用本文： | 杜巧云,曹佃省,李俊霞.N,N′-二(十二烷基)乙二胺二乙酸萃取镨的研究[J].洛阳师范学院学报,2005,24(2):49-51. |
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| 作者姓名： | 杜巧云 曹佃省 李俊霞 |
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| 作者单位： | 洛阳师范学院化学系 河南洛阳471022
(杜巧云，曹佃省)，洛阳师范学院化学系 河南洛阳471022(李俊霞) |
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| 摘 要： | 研究了长链氨羧络合剂N,N′-二(十二烷基)乙二胺二乙酸的氯仿溶液对镨(Ⅲ)的萃取行为,考察了初始水相酸度、萃取剂浓度、相比及温度等对Pr(Ⅲ)萃取率的影响.结果表明,在pH=6～7条件下对Pr(Ⅲ)有很高的萃取率,且随萃取剂浓度增大而增大;在25℃～35℃范围内lgD随温度升高线性增大.用摩尔比法测得Pr(Ⅲ)与萃取剂的摩尔比为2:1
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| 关 键 词： | 氨羧络合剂 萃取 螯合 镨 |
| 文章编号： | 1009-4970(2005)02-0049-03 |
| 修稿时间： | 2005年1月16日 |
Study On Extraction of Pr(Ⅲ) with a New Reagent-N,N'-di(dodecyl)ethylenediamien-di-acetic Acid |
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| DU Qiao-yun,CAO Dian-sheng,LI Jun-xian.Study On Extraction of Pr(Ⅲ) with a New Reagent-N,N'-di(dodecyl)ethylenediamien-di-acetic Acid[J].Journal of Luoyang Teachers College,2005,24(2):49-51. |
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| Authors: | DU Qiao-yun CAO Dian-sheng LI Jun-xian |
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| Abstract: | Extraction behavior of Pr(Ⅲ) with a long-chain trilon N,N′-di (dodecyl)- ethylenediamien-di-acetic acid H_2R_2Y) in chloroform has been investigated. The influence of acidity, concentration of H_2R_2Y, phase-radio and temperature of extraction reaction has been studied. The results indicate that: percentage extraction of Pr~ 3+ is higher at pH = 6 and which increases with the increase of concentration of H_2R_2Y; lgD increases linearly with the increase of temperature at range 25℃～35℃. Complex ratio between H_2R_2Y and Pr~ 3+2:1 was substantiated by mole ratio method. |
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| Keywords: | trilon extraction chelate praseodymium |
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