Chemistry and thermochemistry of anion-exchange extraction of polynuclear tungstates

被引：0

作者：

Ivanov, IM ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Inorgan Chem, Siberian Div, Novosibirsk 630090, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2002年 / 47卷 / 10期

关键词：

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The parameters of anion-exchange extraction of polynuclear anionic species of oxytungstates from dilute solutions are determined. From freshly prepared (Na2WO4 + HCl) solutions, hexatungstates of composition H3W6O213- and H4W6O212- are mainly extracted. From an exposed solution, H3W7O243- and H4W7O242- are extracted. The different compositions of complexes are due to the slow conversions of polynuclear species in aqueous solution. The protonation constants and heats of formation for heptatungstates HxW7O24(6-x)- are determined.

引用

页码：1590 / 1596

页数：7

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