| Synthesis and Properties of Heteropoly Tungstovanadogermanic Complexes with Rare Earths |
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| 作者姓名： | 马慧媛 单永奎 周百斌 赵儒铭 彭军 |
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| 作者单位： | 1. Northeast Normal University，Changchun 130024，China; 2. Department of Chemistry，Harbin Normal University，Harbin 150080，China; 3. Department of Chemistry，Wuhan University，Wuhan 430 |
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| 基金项目： | rojectsupportedbytheNationalNatnralScienceFoundationofChina (2 96710 0 9)andtheNationalNaturalScienceFounda tionofHeilongjiangProvince (B95 0 2 ) |
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| 摘 要： | Ｈｅｔｅｒｏｐｏｌｙｃｏｍｐｏｕｎｄｉｓａｎｅｗｃａｔａｌｙｓｔｗｉｔｈｍａｎｙｆｕｎｃｔｉｏｎｓｉｎｃｈｅｍｉｓｔｒｙｉｎｄｕｓｔｒｙ .Ｉｔｓｅｘｃｅｌｌｅｎｔｃａｔａｌｙｔｉｃｐｅｒｆｏｒｍａｎｃｅｉｓｄｅｔｅｒｍｉｎｅｄｂｙｉｔｓｃｏｍｐｏｓｉｔｉｏｎａｎｄｓｔｒｕｃｔｕｒｅ .Ｉｔｈａｓｓｉｍｐｌｅｃｏｍｐｏｓｉｔｉｏｎａｎｄｆｉｘｅｄｓｔｒｕｃｔｕｒｅ ,ａｌｔｈｏｕｇｈｉｔｍａｙｃｏｎｓｉｓｔｏｆｍａｎｙｅｌｅｍｅｎｔｓ .Ｉｔｓｓｔｒｕｃｔｕｒｅａｎｄｐｒｏｐｅｒｔｙｃａｎｂｅｃｈａｎｇ…
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| 关 键 词： | 杂多阳离子 稀土 配合物 合成 性能 XRD XPX |
Synthesis and Properties of Heteropoly Tungstovanadogermanic Complexes with Rare Earths |
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| Ma Huiyuan,Shan Yongkui,Zhou Baibin,Zhao Ruming,Peng Jun.Synthesis and Properties of Heteropoly Tungstovanadogermanic Complexes with Rare Earths[J].Journal of Rare Earths,2002,20(2):87-92. |
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| Authors: | Ma Huiyuan Shan Yongkui Zhou Baibin Zhao Ruming Peng Jun |
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| Abstract: | Ten tungstovanadogermanic complexes K13H2Ln(GeW10VO39)2]nH2O (Ln=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Yb) were synthesized for the first time. Their structures were characterized by IR, UV, ESR, XPS, XRD and magnetic susceptibility. Their redox properties were studied by means of cyclic voctammetry and polargraphy. The results show that the complexes undergo three step reduction, the first step is the double electronic reversible, while the second and the third steps are irreversible. Their thermal stability studied by TG-DTA, IR and XRD at various temperature shows that the range of pyrolysis temperature is 450～500 ℃. The complex stability in solution investigated by the acid-alkali titration indicates that the range of pH in which the heteropoly anions can exist stably is pH=3.3～7.6 at room temperature. |
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| Keywords: | rare earths heteropoly anions Keggin structure |
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