| 具有Dawson结构的过渡金属杂多钨磷酸盐的氧化还原性质研究 |
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| 引用本文： | 柳士忠,朱宁,刘宏辉,程驿,方光荣.具有Dawson结构的过渡金属杂多钨磷酸盐的氧化还原性质研究[J].湖北大学学报(自然科学版),1993(1). |
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| 作者姓名： | 柳士忠 朱宁 刘宏辉 程驿 方光荣 |
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| 作者单位： | 湖北大学化学系
(柳士忠，朱宁，刘宏辉，程驿)，湖北大学化学系(方光荣) |
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| 摘 要： | 采用极谱和循环伏安法,研究过渡金属杂多钨磷酸盐K_xP_2W_(17)ZO_(62)]·nH_2O(Z=Ti~(4+),Mn~(2+),Fe~(3+),Co~(2+),Ni~(2+),Cu~(2+),简写为P_2W_(17)Z)在溶液中的氧化还原性质,发现杂多阴离子的第一极谱半波还原电位E_(1/2)的顺序为Cu~(2+)>Ni~(2+)>Co~(2+)>Fe~(2+)>Mn~(2+)。分析了循环伏安峰电位与pH的关系,提出了它们的还原机理,讨论了过渡元素对杂多阴离子氧化还原性质的影响。
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| 关 键 词： | Dawson结构 过渡金属 钨磷酸盐 氧化还原 |
STUDIES ON REDOX PROPERTIES OF TRANSITION METALS HETEROPOLY TUNGSTOPHOSPHATES WITH DAWSON STRUCTURE |
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| Liu Shizhong Zhu Ling Liu Honghui Cheng Yi Fang Guangrong.STUDIES ON REDOX PROPERTIES OF TRANSITION METALS HETEROPOLY TUNGSTOPHOSPHATES WITH DAWSON STRUCTURE[J].Journal of Hubei University(Natural Science Edition),1993(1). |
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| Authors: | Liu Shizhong Zhu Ling Liu Honghui Cheng Yi Fang Guangrong |
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| Institution: | Department of Chemistry |
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| Abstract: | The redox properties of transition metals triheteropoly tungstophosphates KXP2W17 ZO62] nH2O(Z = Ti4+ ,Mn2+ ,Fe3+ ,Co2+ ,Ni2+ and Cu2+ ,abbreabbrev to P2W17Z)in solution were studied by polarography and cyclic voltammetry ,and it was found that the order of the polarographic halfwave potentials Dt/2: of these heteropoly anions was:Z = Cu2+>Ni2+>Co2+>Fe2+>Mn2+. The relationship between the cyclic voltammogrammetric peak potentials and pH was analyzed and the reduction mechanism was proposed and the effect of transition metals on the redox properties of the heteropoly anions were discussed in this paper. |
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| Keywords: | Dawson structure Transition metals Tungstophosphate Redox |
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