| 频谱分析法研究超声对电化学反应中传质过程的影响 |
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| 引用本文： | 鄂利海,周定,孙伟,栾耕时,陈家福.频谱分析法研究超声对电化学反应中传质过程的影响[J].高等学校化学学报,2001,22(10):1649-1653. |
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| 作者姓名： | 鄂利海 周定 孙伟 栾耕时 陈家福 |
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| 作者单位： | 1. 抚顺石油学院环境工程系,
2. 哈尔滨工业大学环境科学与工程系, |
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| 摘 要： | 采用频谱分析法对超声作用下Fe(CN)6^3-/Fe(CN)6^4-氧化还原体系在Pt微电极上的计量电流实验数据进行分析。通过离散傅里叶变换（DFT）将复杂的时域谱转化为频域谱，较清楚地将超声对电极反应的影响区分为不同频率下的幅值信号，对不同超声条件下的分析结果表明，该方法可定量地分析不同超声条件下超声对传质过程的影响，并分析了超声强度随作用距离增大而衰减的规律。在相同超声条件下的实验结果表明，经DFT处理后的幅值信号大小与反应物浓度成正比。
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| 关 键 词： | 功率超声 频谱分析 传质过程 电化学反应 反应历程 电极反应 |
| 文章编号： | 0251-0790(2001)10-1649-05 |
Spectrum Analysis of the Effect of Ultrasound to Mass Transfer Process in Electrochemical Reaction |
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| E Li\|Hai\\{\},ZHOU Ding\,SUN Wei\,LUAN Geng\|Shi\,CHEN Jia\|Fu\.Spectrum Analysis of the Effect of Ultrasound to Mass Transfer Process in Electrochemical Reaction[J].Chemical Research In Chinese Universities,2001,22(10):1649-1653. |
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| Authors: | E Li\|Hai\\{\} ZHOU Ding\ SUN Wei\ LUAN Geng\|Shi\ CHEN Jia\|Fu\ |
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| Institution: | E Li\|Hai\+\{1*\},ZHOU Ding\+2,SUN Wei\+1,LUAN Geng\|Shi\+1,CHEN Jia\|Fu\+1 |
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| Abstract: | Spectrum analysis method was used to study the currents of chronoamperometry of \{Fe(CN)\+\{3-\}\-6/Fe(CN)\+\{4-\}\-6\} at Pt microdisk electrode under ultrasound. Through the DFT can transform the complicate Time spectrum to simple frequency spectrum in some special frequencies, which have specific amplitudes relatived to different mass transfer process of ultrasound. This method can be used to analyse the effect of ultrasound under different conditions, and gives a quantification result. The decay rule of effect of ultrasound with the distance between sono\|horn and surface of electrode was also studied. |
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| Keywords: | Power ultrasound Spectrum analysis Mass transfer process |
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