钼钒砷三元杂多酸氧化还原性能研究  

STUDY ON THE REDOX PROPERTIES OF MOLYBDOVANADOARSENIC HETEROPOLYACIDS

作　　者：邓谦[1] 蔡铁军[1] 李大塘[1] 龙云飞[1] 彭振山[1] 邓彤彤[1] 

机构地区：[1]湘潭师范学院化学系,湖南湘潭411201

出　　处：《化学研究与应用》2001年第1期83-86,共4页Chemical Research and Application

基　　金：湖南省教委资助项目 !(湘教财字 [1999] 12号 99C2 2 7和湘教通 [1997] 2 0 0号 )

摘　　要：The redox properties of molybdovanadoarsenic heteropolyacids having keggin structure,H x[AsV nM O 12-n O 40 ]·YH 2O(n=1～4),were studied with polarography,cyclic voltammetry and XPS.It was ascertained that three redution steps for the four heteropolyacids involved 2,2,2 electrons accompanied by the adition of 1,1,1 protons.A reduction mechanism has been proposed.The oxidation ability of these heteropolyacids increases with the increase of the substitution of vanadium.The redox properties of molybdovanadoarsenic heteropolyacids having keggin structure,H x[AsV nM O 12-n O 40 ]·YH 2O(n=1～4),were studied with polarography,cyclic voltammetry and XPS.It was ascertained that three redution steps for the four heteropolyacids involved 2,2,2 electrons accompanied by the adition of 1,1,1 protons.A reduction mechanism has been proposed.The oxidation ability of these heteropolyacids increases with the increase of the substitution of vanadium.

关 键 词：循环伏安 钼 钒 砷 三元杂多酸 氧化还原性能 催化剂 

分 类 号：O641.4[理学—物理化学] O643.36[理学—化学]