Thermodynamics of cationic substitutions on titanyl hydrogen phosphate

被引：4

作者：

Ivanenko, V. I. ^{[1
]}

Lokshin, E. P. ^{[1
]}

Aksenova, S. V. ^{[1
]}

Korneikov, R. I. ^{[1
]}

Kalinnikov, V. T. ^{[1
]}

机构：

[1] Russian Acad Sci, Kola Res Ctr, Tananaev Inst Rare Element & Min Chem & Technol, Apatity 184200, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2008年 / 53卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

Hydration - pH effects - Phosphates - Positive ions - Radioactive wastes - Stoichiometry - Substitution reactions - Thermodynamics;

D O I：

10.1134/S0036023608040037

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Heterophasic substitution of Group I and Group II metal cations for hydrogen ions of titanyl hydrogen phosphate in aqueous solutions has been studied by a potentiometric method. The thermodynamic parameters of the process have been determined. The exchange constants depend on the degree of cation hydration and increase in the following orders: Li+ < Na+ < K+ < Rb+ < Cs+ and Mg2+ < Ca2+ < Sr2+ < Ba2+. Our results make it possible to determine conditions for the efficient deactivation of high-salt liquid radioactive wastes and for the synthesis of stoichiometric compounds of the KTP family.

引用

页码：503 / 508

页数：6

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