On the solubility of lanthanum oxide in molten alkali fluorides

被引：26

作者：

Ambrova, M. ^{[1
]}

Jurisova, J. ^{[1
]}

Danielik, V. ^{[1
]}

Gabcova, J. ^{[1
]}

机构：

[1] Slovak Tech Univ Bratislava, Fac Chem & Food Technol, Dept Inorgan Chem Technol & Mat, Bratislava 81237, Slovakia

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2008年 / 91卷 / 02期

关键词：

lanthanum oxide; molten alkali fluorides; solubility; thermal analysis;

D O I：

10.1007/s10973-007-8533-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The solubilities of lanthanum oxide in LiF, NaF, KF and eutectic melt LiF-NaF-KF (46.5 mole% LiF; 11.5 mole% NaF and 42.0 mole% KF) were measured in order to find the suitable electrolyte for electrodeposition of lanthanum. Solidus-liquidus lines were obtained by the method of thermal analysis. The solubility of lanthanum oxide in alkali fluorides is rather low and decreases in the order LiF > NaF > KF. It was found that lanthanum oxide reacts with the components of the melt. LaOF and alkali metal oxide are formed during dissolution of La2O3 in the melt.

引用

页码：569 / 573

页数：5

共 8 条

[1]

BERUL SI, 1963, ZH NEORG KHIM+, V8, P1431

[2]

FELLNER P, 1974, CHEM ZVESTI, V28, P201

[3]

LECHATELIER H, 1885, CR HEBD ACAD SCI, V100, P441

[4]

Reisman A., 1970, PHASE EQUILIBRIA

[5]

Schroder I., 1893, Z. Phys. Chem., V11, P449

[6] Electrodeposition of neodymium from LiF-NdF3-Nd2O3 melts [J].

Stefanidaki, E ;

Hasiotis, C ;

Kontoyannis, C .

ELECTROCHIMICA ACTA, 2001, 46 (17) :2665-2670

[7]

STORTENBEKER W, 1892, Z PHYS CHEM, V10, P183

[8] Thermodynamic modelling of LiF-LnF3 and LiF-AnF3 phase diagrams [J].

van der Meer, JPM ;

Konings, RJM ;

Jacobs, MHG ;

Oonk, HAJ .

JOURNAL OF NUCLEAR MATERIALS, 2004, 335 (03) :345-352

← 1 →