EuCl_3在氯化1-丁基-3-甲基咪唑中的电化学性质

doi:10.61558/2993-074X.2043

电化学（中英文） ›› 2010, Vol. 16 ›› Issue (1): 79-84. doi: 10.61558/2993-074X.2043

EuCl_3在氯化1-丁基-3-甲基咪唑中的电化学性质

张秋月;何辉;黄小红;叶国安;

中国原子能科学研究院放射化学研究所;

收稿日期:2010-02-28 修回日期:2010-02-28 出版日期:2010-02-28 发布日期:2010-02-28

Electrochemical Behavior of Europium(Ⅲ) in 1-butyl-3-methylimidazolium

ZHANG Qiu-yue,HE Hui*,HUANG Xiao-hong,YE Guo-an

(China Institute of Atomic Energy,Department of Radiochemistry,Beijing 102413,China

Received:2010-02-28 Revised:2010-02-28 Published:2010-02-28 Online:2010-02-28

摘要/Abstract

摘要： 应用循环伏安法研究了Eu3+在亲水性离子液体—氯化1-丁基-3-甲基咪唑([BMIM]Cl)中的电极过程.实验表明,工作电极为玻碳电极时,[BMIM]Cl的电化学窗口为-1.7～0.80V(vs.Ag/AgCl).Eu3+在[BMIM]Cl中被还原为Eu2+,此电极反应受电荷迁移和物质扩散共同控制.当体系温度从55℃升高到75℃时,Eu3+在[BMIM]Cl中的扩散系数D从3.75×10-9cm2/s变化到1.32×10-8cm2/s,该反应活化能Ea为62.6kJ/mol.

关键词: 离子液体, 氯化1-丁基-3-甲基咪唑, 铕, 循环伏安

Abstract: The electrochemical behavior of EuCl3 in 1-butyl-3-methylimidazolium chlorid([BMIM]Cl) has been investigated in the temperature range of 328 ～ 348 K by cyclic voltammetry.Influences of scan speed and temperature in [BMIM]Cl have been examined.The electrochemical window of [BMIM]Cl was-1.7 V ～ 0.80 V(vs.Ag/AgCl),when the working electrode was glassy carbon electrode.Eu3+ in[BMIM]Cl underwent a single step one-electron transfer reduction to Eu2 +,which is quasi-reversible reaction controlled by both electron transfer and diffusion of ions.The diffusion coefficient of Eu3 + in [BMIM]Cl increased with increase of temperature from 3.75 × 10-9 cm2 /s at 328 K to 1.32 × 10-8 cm2 /s at 348 K and the activation energy was found to be 62.6 kJ/mol.

Key words: room temperature ionic liquid, [BMIM]Cl, europium, cyclic voltammetry

中图分类号:

TL24

张秋月, 何辉, 黄小红, 叶国安, . EuCl_3在氯化1-丁基-3-甲基咪唑中的电化学性质[J]. 电化学（中英文）, 2010, 16(1): 79-84.

ZHANG Qiu-yue, HE Hui, HUANG Xiao-hong, YE Guo-an. Electrochemical Behavior of Europium(Ⅲ) in 1-butyl-3-methylimidazolium[J]. Journal of Electrochemistry, 2010, 16(1): 79-84.

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https://electrochem.xmu.edu.cn/CN/Y2010/V16/I1/79

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EuCl_3在氯化1-丁基-3-甲基咪唑中的电化学性质

Electrochemical Behavior of Europium(Ⅲ) in 1-butyl-3-methylimidazolium

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