Determination of Diffusion Coefficient of Isopropanol in Alkaline Medium using Electrochemical Methods on Pd Electrode~!2009-12-09~!2010-02-20~!2010-06-09~!
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引用次数: 5
Abstract
The diffusion coefficient of isopropanol in alkaline medium using electrochemical methods on Pd electrode has been studied by linear sweep voltammetry (LSV) with different sweep rate and chronoamperometry in 1.0 M KOH solution containing 1.0 M isopropanol. Isopropanol oxidation on the Pd electrode is an irreversible charge-transport process and controlled by a diffusion process. The diffusion coefficient of isopropanol on the Pd electrode is obtained as 1.01 10 -6 cm 2 s -1 using the LSV method and 1.06 10 -6 cm 2 s -1 using the chronoamperometry method. The average diffusion coefficient of isopropanol is 1.04 10 -6 cm 2 s -1 .
在含1.0 M异丙醇的1.0 M KOH溶液中，采用不同扫描速率的线性扫描伏安法(LSV)研究了异丙醇在碱性介质中在Pd电极上的扩散系数。异丙醇在Pd电极上的氧化是一个不可逆的电荷输运过程，受扩散过程控制。异丙醇在Pd电极上的扩散系数分别为1.01 10 -6 cm 2 s -1 (LSV法)和1.06 10 -6 cm 2 s -1(计时电流法)。异丙醇的平均扩散系数为1.04 10 -6 cm 2 s -1。
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