Keggin结构含钒混配型杂多酸盐及其杂多蓝的极谱和热谱  

Polarography and Thermal Spectra of the Heteropoly Acid and the Heteropoly Blue Containing Vanadium with Keggin Structure

作　　者：任群翔[1] 封丽[1] 

机构地区：[1]沈阳医学院化学教研室,沈阳市110034

出　　处：《光谱实验室》2002年第4期445-447,共3页Chinese Journal of Spectroscopy Laboratory

摘　　要：本文利用极谱和循环伏安的方法研究了杂多酸盐 K3 H2 [Si V Mo2 W9O4 0 ]· 10 H2 O及其一电子杂多蓝 K4 H2 [Si V Mo2 W9O4 0 ]· 12 H2 O和杂多酸盐 K4 H3 [Si V3 W9O4 0 ]· 13H2 O及其两电子杂多蓝 K4 H5[Si V2 V W9O4 0 ]· 11H2 O的氧化还原性质 ,利用 TG- DTA曲线分析了这 4种物质的热稳定性。结果表明杂多酸盐被还原为杂多蓝后 ,氧化能力有所降低 ,但热稳定性增加。The redox properties of the heteropoly acid K 3H 2[SiV ⅤMo 2W 9O 40]·10H 2O,heteropoly acid K 4H 3[Si V 3 ⅤW 9O 40]·13H 2O,heteropoly blue K 4H 2[SiV ⅣMo 2W 9O 40]·12H 2O and heteropoly blue K 4H 5[Si V 2 ⅣV ⅤW 9O 40]·11H 2O were studied with polarography and cyclic voltammetry.The thermal stability of them were also studied by TG-DTA.All results showed that after the heteropoly blues were formed,the half wave potential shifted to negative direction with the thermal stability.

关 键 词：KEGGIN结构 含钒混配型杂多酸盐 杂多蓝 极谱 热谱 热稳定性 

分 类 号：O641.4[理学—物理化学] O657.14[理学—化学]