Electrochemistry of molten LiCl-KCl-CrC3 and LiCl-KCl-CrCl2 mixtures

被引：29

作者：

Cotarta, A ^{[1
]}

Bouteillon, J ^{[1
]}

Poignet, JC ^{[1
]}

机构：

[1] UJF,ENSEEG,LAB ELECTOCHIM & PHYSICOCHIM MAT & INTERFACES,INPG,CNRS,UMR 5631,F-38402 ST MARTIN DHER,FRANCE

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 1997年 / 27卷 / 06期

关键词：

D O I：

10.1023/A:1018475401848

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Chemical reactions during dissolution of CrCl3 or CrCl2 in molten LiCl-KCL eutectic have been demonstrated to occur, but the nature of the reactions is not yet well understood. Reduction of CrCl3 to chromium metal occurs through two well-characterized electrochemical steps, at approximately +0.1 and -0.9 V vs Ag/AgCl. Each step was studied in the 0.025-0.085 molar CrCl3 concentration range, at various temperatures between 375 and 550 degrees C, The Cr(III)/Cr(II) electron transfer step exhibited reversible behaviour under all the experimental conditions studied. In contrast, the Cr(II)/Cr(0) step could involve Cr(II) adsorbed species and initial chromium electrocrystallization phenomena, mainly depending on the nature of the substrate.

引用

页码：651 / 658

页数：8

共 16 条

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