高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (9): 876.

• 论文 • 上一篇    下一篇

具有Dawson结构的钼钒磷杂多酸氧化还原性质的研究

王恩波, 高丽华, 刘景福, 刘宗绪   

  1. 东北师范大学化学系
  • 收稿日期:1987-04-28 出版日期:1988-09-24 发布日期:1988-09-24
  • 通讯作者: 王恩波

Studies on the Redox Properties of Molybdovado Phosphoric Heteropolyacids Having Dawson Structure

Wang Enbo, Gao Lihua, Liu Jingfu, Liu Zongxu   

  1. Department of Chemistry, Northeast Normal University, Changchun
  • Received:1987-04-28 Online:1988-09-24 Published:1988-09-24

摘要: 通过SnCl2电位滴定、极谱和循环伏安方法,详细研究了2:18系列钼钒磷杂多酸H(6+n)[P2Mo13-nVnO62]·xH2O(n=1~3)和H4+n[P2Mo18-nVnO62H2]·xH2O(n=4,5)在溶液中的氧化还原性质,证实它们的还原为三步分别加合n,2,2个电子,同时加合n,2,2个质子的过程,总结了循环伏安峰电位与pH的关系,提出了还原机理。

关键词: Dawson, 钼钒磷酸, 氧化还原

Abstract: The redox properties of molybdovanadophosphoric acid H6+n[P2Mo18-nVnO62]·H2O(n=1~3) and H4+n[P2Mo13-nVnO62H2]· H2O(n= 4,5) in solution were studied with potentiotitrimetry and polarography and cyclic voltammetry. The three reduction steps for the five heteropolyacids involving n, 2, 2 electrons accompanied by the addition of n, 2,2 protons were ascertained. The correlograms of the cyclic voltammogrammetric peak potentials versus pHwere obtained and the reduction mechanism has been proposed.

Key words: Dowson, Molybdovanadophosphoric acid, Redox

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