Solubility of (NH4)2SiF6, K2SiF6 and Na2SiF6 in acidic solutions

被引：43

作者：

Frayret, Jerome

Castetbon, Alain

Trouve, Gerard

Potin-Gautier, Martine

机构：

[1] Univ Pau & Pays Adour, CURS, UMR 5034, LCABIE, F-64000 Pau, France

[2] SEPPIC, F-81105 Castres, France

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 427卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2006.06.044

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Experimental values for the solubilities of three alkaline salts of hexafluorosilicate (K2SiF6, Na2SiF6 and (NH4)(2)SiF6) in different acidic solutions are reported as a function of the acid concentration in the solution. The acids used for this Letter are hydrofluoric, hydrochloric, sulphuric and nitric acids. The solubilities of the three studied compounds present important variations according to the nature and the concentration of the acidic solution. The presence of these acids influences the ionic strength of the solution, which plays an important role on the solubilisation of the three studied hexafluorosilicates. Fit curves have been elaborated to characterize the solubilisation phenomenon of the three compounds in the studied acidic solutions. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：356 / 364

页数：9

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