| 有机磷酸混合萃取体系的界面化学及动力学控制机制研究 |
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| 引用本文： | 於静芬,吉晨.有机磷酸混合萃取体系的界面化学及动力学控制机制研究[J].高等学校化学学报,1992,13(2):224-226. |
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| 作者姓名： | 於静芬 吉晨 |
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| 作者单位： | 清华大学化工系, 北京, 100084 |
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| 摘 要： | 研究了D2EHPA(二(2-乙基己基)磷酸)-M1PA、M2PA(长碳链单烷基磷酸酯)-Al3+和D2EHPA-MEHPA(单(2-乙基己基)磷酸)-Al3+混合萃取体系的界面化学和动力学。结果表明,混合体系界面活性下降,D2EHPA-M1PA萃取Al3+的过程为扩散和化学反应共同控制机制。
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| 关 键 词： | 萃取动力学 Al 界面活性 胶团化作用 |
| 收稿时间： | 1991-01-31 |
Interfacial Chemistry and Kinetics-Controlled Reaction Mechanism of Organo-Phosphoric Acid Mixed Extraction Systems |
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| YU Jing-fen,JI Chen.Interfacial Chemistry and Kinetics-Controlled Reaction Mechanism of Organo-Phosphoric Acid Mixed Extraction Systems[J].Chemical Research In Chinese Universities,1992,13(2):224-226. |
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| Authors: | YU Jing-fen JI Chen |
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| Institution: | Department of Chemical Engineering, Tsinghua University, Beijing, 100084 |
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| Abstract: | The interfacial chemistry for D2EHPA(Di(2-ethyl-hexyl) phosphoric acid)-M1PA or M2PA(two monophosphoric acid extractants with a long-chain)-Al3+ and D2EHPA-MEHPA (mono(2-cthyl hexyl)phosphoric acid)-Al3+ mixed extraction systems was studied. It was found that, compared with individual extraction system alone, the mixed extraction systems show a particular advantage improvement in the interfacial characteristics of the systems. The extraction kinetics and interfacial chemistry study indiate that the process of aluminium extraction by micella mixed extraction system(D2EHPA-M1PA) is controlled by the chemical reaction in combination with diffusion, while the controlling reaction occurred inside the micella phase. |
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| Keywords: | Extraction kinetics Aluminum Interfacial activity Micellization |
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