Diffusion coefficients of iodide in high temperature aqueous solutions

被引：15
|
作者：
Trevani, LN
Calvo, E
Corti, HR
机构：
[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Inst Quim Fis Mat Med Ambiente & Energia, RA-1428 Buenos Aires, DF, Argentina
[2] Comis Nacl Energia Atom, Ctr Atom Constituyentes, Unidad Actividad Quim, RA-1625 Buenos Aires, DF, Argentina
[3] Univ Nacl Gral, Escuela Ciencia & Tecnol, RA-1653 Buenos Aires, DF, Argentina
[4] CONICET, Argentine Sci Res Council, Permanent Res Staff, RA-1033 Buenos Aires, DF, Argentina
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2000年 / 2卷 / 05期
关键词：
iodide; diffusion; high temperature; wall-tube electrode; solvation;
D O I：
10.1016/S1388-2481(00)00023-0
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The diffusion coefficients of iodide in water solutions containing NaHSO4 as supporting electrolyte have been measured between 102 and 215 degrees C using a high-temperature wall-tube cell. The temperature behavior of the diffusion coefficients is well described by the Arrhenius law and the activation energy for the mass transport is 17 kJ mol(-1). The results are compared to those calculated from the iodide conductivity at infinite dilution and to recent results from other authors. The solvation and speciation of the iodide ion in aqueous solutions at high temperature are analyzed. (C) 2000 Elsevier Science S.A. All rights reserved.
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页码：312 / 316
页数：5
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