Cr_2O_3粉末在CaCl_2熔盐中直接电化学还原的金属通腔电极研究

电化学（中英文） ›› 2006, Vol. 12 ›› Issue (3): 304-309.

Cr_2O_3粉末在CaCl_2熔盐中直接电化学还原的金属通腔电极研究

邱国红;汪的华;金先波;胡晓宏;陈政;

武汉大学化学与分子科学学院,武汉大学化学与分子科学学院,武汉大学化学与分子科学学院,武汉大学化学与分子科学学院,武汉大学化学与分子科学学院湖北武汉430072,湖北武汉430072,湖北武汉430072,湖北武汉430072,湖北武汉430072

收稿日期:2006-08-28 修回日期:2006-08-28 出版日期:2006-08-28 发布日期:2006-08-28

Investigation of the Direct Electrochemical Reduction of Cr_(2)O_(3) Powder in Molten CaCl_(2) by a Metallic Cavity Electrode

QIU Guo-hong,WANG Di-hua,JIN Xian-bo,HU Xiao-hong,CHEN Zheng~*

(College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,Hubei,China

Received:2006-08-28 Revised:2006-08-28 Published:2006-08-28 Online:2006-08-28

摘要/Abstract

摘要： 应用金属通腔电极研究Cr2O3粉末于熔盐中的电化学行为,验证了900℃下Cr2O3粉末在含镁量<0.005%氯化钙熔盐中的分步还原机理,估算其电化学还原动力学参数;并由扫描电镜观察产物形貌,分析电解电位和时间对金属颗粒尺寸的影响.

关键词: 金属通腔电极, 直接电化学还原, 氧化铬粉末, 循环伏安法, 计时电流法, 熔盐

Abstract: A metallic cavity electrode is used for further investigation of the electrochemical behaviour of(Cr_(2)O_3) powder in molten CaCl_(2)(Na: ~0.02% by mass,Mg: < 0.005% by mass) at 900 ℃.The Cr_(2)O_(3) powder reduction mechanism was confirmed in line with EDX and SEM analysis of the potentiostatic electrolysis products.The correlations between the particle size of metallised product and the electrolysis potential,or electrolysis time were analysed.

Key words: Metallic cavity electrode, Direct electrochemical reduction, Chromium oxide powder, Cyclic voltammetry, Chronoamperometry, Molten salt

中图分类号:

O646.5

邱国红;汪的华;金先波;胡晓宏;陈政;. Cr_2O_3粉末在CaCl_2熔盐中直接电化学还原的金属通腔电极研究[J]. 电化学（中英文）, 2006, 12(3): 304-309.

QIU Guo-hong,WANG Di-hua,JIN Xian-bo,HU Xiao-hong,CHEN Zheng~*. Investigation of the Direct Electrochemical Reduction of Cr_(2)O_(3) Powder in Molten CaCl_(2) by a Metallic Cavity Electrode[J]. Journal of Electrochemistry, 2006, 12(3): 304-309.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2006/V12/I3/304

参考文献

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