| Keggin结构钼钨硅杂多酸及其稀土衍生物的氧化还原性质研究 |
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| 引用本文： | 马慧媛,赵慧珍,周百斌,单永奎,周宏立,赵儒铭.Keggin结构钼钨硅杂多酸及其稀土衍生物的氧化还原性质研究[J].稀土,1997(2). |
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| 作者姓名： | 马慧媛 赵慧珍 周百斌 单永奎 周宏立 赵儒铭 |
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| 作者单位： | 哈尔滨师范大学化学系，湖北宜昌大学化学工程系 |
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| 摘 要： | 利用循环伏安和极谱研究了Ｋｅｇｇｉｎ结构钼钨硅杂多酸Ｈ４ＳｉＭｏ１２－ｎＷｎＯ４０（记为ＳｉＭｏ１２－ｎＷｎ，ｎ＝２，４，６，８，１０）及其稀土衍生物Ｋ１０Ｈ３〔Ｌｎ（ＳｉＭｏ６Ｗ５Ｏ３９）２〕（记为Ｌｎ（ＳｉＭｏ６Ｗ５）２，Ｌｎ＝Ｌａ３＋，Ｃｅ３＋，Ｐｒ３＋，Ｎｄ３＋，Ｓｍ３＋，Ｅｕ３＋，Ｇｄ３＋，Ｄｙ３＋，Ｙｂ３＋）在水溶液中的氧化还原性质，讨论了取代原子和酸度对杂多阴离子氧化还原性质的影响，探讨了极谱半波电位与ｐＨ的关系，并根据静电模型对杂多配合物的氧化还原规律性给予了合理的说明。
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| 关 键 词： | 钼钨硅杂多酸 氧化还原 稀土元素 |
Studiys on Redox Properties of Heteropoly Molybdotungstosilicic Acid and its Lanthanide Derivate with Keggin Structure |
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| Ma Huiyuan,Zhao Huizhen,Zhou Baibin,Shan Yongkui,Zhou Hongli.Studiys on Redox Properties of Heteropoly Molybdotungstosilicic Acid and its Lanthanide Derivate with Keggin Structure[J].Chinese Rare Earths,1997(2). |
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| Authors: | Ma Huiyuan Zhao Huizhen Zhou Baibin Shan Yongkui Zhou Hongli |
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| Abstract: | The redox properties of molybdotungstosilicic acid and lanthanide derivate with Keggin structure such as H 4SiMo 12-n W nO 40 (n=2,4,6,8,10) and K 10 H 3 Ln(SiMo 12-n W nO 39 ) 2 (Ln=La 3 ,Ce 3 ,Pr 3 ,Nd 3 ,Sm 3 ,Eu 3 ,Gd 3 ,Dy 3 ,Yb 3 ) were studied by means of polargraphy and cyclic voltammetry. The effect of substitutional atom and acidity on the redox properties of heteropoly anions were discussed.The correlation between the polarographic half wave potentials and pH was obtained.The redox law was explained in terms of the electrostatic model. |
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| Keywords: | heteropoly molybdotungstosilicic acid rare carth element redox |
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