钼钨铌磷杂多化合物的研究(Ⅰ)--杂多酸的合成和表征

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (7): 950.

钼钨铌磷杂多化合物的研究(Ⅰ)--杂多酸的合成和表征

瞿伦玉, 马荔, 刘景福, 陈亚光, 彭军, 于明

东北师范大学化学系, 长春, 130024

收稿日期:1990-04-12 出版日期:1991-07-24 发布日期:1991-07-24
通讯作者: 瞿伦玉

Studies on Molybdotungstoniobophosphoric Heteropoly Compounds (Ⅰ)--Syntheses and Characterization of the Heteropoly Acids

Qu Lun-yu, Ma Li, Liu Jing-fu, Chen Ya-guang, Peng Jun, Yu Ming

Department of Chemistry, Nartheast Normal University, Changchun, 130024

Received:1990-04-12 Online:1991-07-24 Published:1991-07-24

摘要/Abstract

摘要： 提出了分步酸化一分步加料合成[PNb₂Mo_xW_10-xO₄₀]^5-(x=0,2,4,6)系列杂多酸的方法,给出了最佳配料比和生成反应的pH值,并进行了红外、紫外、极谱、电位滴定及热稳定性研究。

关键词: 钼钨铌磷杂多酸, 混配型杂多化合物, 钨铌磷杂多酸

Abstract: The method of syntheses and properties of a system of heteropoly acids of [PNb₂Mo_xW_1-xO₄₀]^5-(x=0,2,4,6) are reported, in which the acidification and the addition of materials are carried out stepwise. The optimal rate of the materials and the pHof the reaction are given. The determination of IRand UVspectra shows that the acids have Keggin structure. The polarographic data confirm their reduced patterns. The potential titration in organic solvent gives their alkaline of 5. The experiments of thermal stability indicate that the crystal water is essential to stabilizing of these acids.

Key words: Molybdotungstoniobophosphoric heteropoly acids, Mixed heteropoly complexes, Tungsto-niobophosphoric heteropoly acids

TrendMD:

瞿伦玉, 马荔, 刘景福, 陈亚光, 彭军, 于明. 钼钨铌磷杂多化合物的研究(Ⅰ)--杂多酸的合成和表征. 高等学校化学学报, 1991, 12(7): 950.

Qu Lun-yu, Ma Li, Liu Jing-fu, Chen Ya-guang, Peng Jun, Yu Ming . Studies on Molybdotungstoniobophosphoric Heteropoly Compounds (Ⅰ)--Syntheses and Characterization of the Heteropoly Acids. Chem. J. Chinese Universities, 1991, 12(7): 950.