摘要
通过SnCl_(2)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H6+n[P_(2)Mo_(13)-nV_(n)O_(6)_(2)]·xH_(2)O(n=1~3)和H_(4+n)[P_(2)Mo_(18-n)V_(n)O_(6)_(2)H_(2)]·xH_(2)O(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。
The redox properties of molybdovanadophosphoric acid H6+n[P_(2)Mo_(18-n)V_(n)O_(6)_(2)]·H_(2)O(n=1-3)and H_(4+n)[P_(2)Mo_(13)-nV_(n)O_(6)_(2)H_(2)]·H_(2)O(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 pH were obtained and the reduction mechanism has been proposed.
作者
王恩波
高丽华
刘景福
刘宗绪
Wang Enbo;Gao Lihua;Liu Jingfu;Liu Zongxu(Department of Chemistry,Northeast Normal University,Changchun)
出处
《高等学校化学学报》
SCIE
EI
CAS
1988年第9期876-880,共5页
Chemical Journal of Chinese Universities
