| 二-（2-乙基己基）磷酸P204与三烷基叔胺N235协同萃取钼 |
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| 引用本文： | 孙盈,李艳玲,权新军,廖伍平.二-（2-乙基己基）磷酸P204与三烷基叔胺N235协同萃取钼[J].应用化学,2009,26(11):1353-1356. |
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| 作者姓名： | 孙盈 李艳玲 权新军 廖伍平 |
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| 作者单位： | (1.吉林大学化学学院 长春；2.中国科学院长春应用化学研究所稀土资源利用国家重点实验室 长春 130022) |
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| 基金项目： | 国家自然科学基金，吉林省科技发展计划 |
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| 摘 要： | 研究了P204（二-(2-乙基己基)磷酸, HA）和N235（三烷基胺, R3N）二元体系在HCl介质中对金属钼的萃取，结果表明P204和N235混合萃取剂在萃取钼时存在协同效应，并且在N235摩尔分数为0.7时协萃系数为2.24；考察了溶液酸度、P204或N235浓度及温度对萃取钼的影响，确定了协萃络合物为(R3NH)3?HMo8O26?2(HA)，并比较了负载前后有机相的红外光谱。
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| 关 键 词： | 协同萃取 钼 三烷基叔胺 二-(2-乙基己基)磷酸 |
| 收稿时间： | 2008-11-14 |
| 修稿时间： | 2009-01-07 |
Synergistic Extraction1 |
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| SUN Ying,LI Yan-Ling,QUAN Xin-Jun,LIAO Wu-Ping.Synergistic Extraction1[J].Chinese Journal of Applied Chemistry,2009,26(11):1353-1356. |
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| Authors: | SUN Ying LI Yan-Ling QUAN Xin-Jun LIAO Wu-Ping |
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| Institution: | (1.College of Chemistry,Jilin University，Changchun 130012;
2.State Key Laboratory of RE Resource Utilization,Changchun Institute of ;
Applied Chemistry,Chinese Academy of Sciences,Changchun 130022) |
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| Abstract: | Synergistic effect in the extraction of molybdenum by the mixed extractants of di-2-ethylhexyl phosphoric acid (P204) and trialkylamine N235 has been investigated. The results reveal that the mixed system shows an obvious enhancement on the extraction of molybdenum with the mole fraction of N235 being of about 0.7. The effect of the aqueous acidity, the concentration of P204 or N235 and temperature on the extraction of molybdenum was further studied. The reaction mechanism was deduced and the extracted species was decided to be (R3NH)3?HMo8O26?2(HA). FT-IR spectra of the mixed extractants and the loaded organic phase were examined. |
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| Keywords: | synergistic extraction molybdenum trialkylamin di-2-ethylhexyl phosphoric acid |
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