| 不饱和醇电还原的质谱-电化学循环伏安(MSCV)法研究:II.炔丙醇的电还原 |
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| 引用本文： | 刘佩芳,陈剑,王辉,查全性.不饱和醇电还原的质谱-电化学循环伏安(MSCV)法研究:II.炔丙醇的电还原[J].化学学报,1993,51(2):155-160. |
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| 作者姓名： | 刘佩芳 陈剑 王辉 查全性 |
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| 作者单位： | 武汉大学化学系电化学研究室 |
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| 摘 要： | 炔丙醇在多孔Pt黑电极上, 0.5mol.dm^-3HCLO4溶液中电还原的MSCV研究结果表明炔丙醇电还原时既涉及烯丙基C-OH断键反应亦涉及炔丙基上C-OH断键反应生成烃类。此外有少量炔丙醇直接质子化生成部分饱和的烯丙醇。表征各种反应产物的M/Z的质谱电流-电极电位扫描曲线(IM-Φ)详细描绘了各分步反应的图象。各M/Z的1gIM-Φ曲线在一空电位范围内呈线性, 并求得它们的Tafel斜率。依据实验结果对反应机理进行了详细分析。
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| 关 键 词： | 反应机理 丙炔醇 电还原 不饱和醇 质谱-电化学循环伏安法 |
MSCV studies of electroreduction of unsaturated alcohols:II. electroreduction of propargyl alcohol |
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| Abstract: | Results from MSCV (Mass spectrometric cyclic voltammetry) studies for electroreduction of propargyl alcoholat Pt porous electrodeson 0.5mol.dm^-3HCLO4 indicate that C-OH bond may be cleaved in both allyl and propargyl groupsfollowed by forming propene and propane .besides a small mamount of propargyl alcohol is directly protomated to allyl alcohol.the mass current (IM)-potential (Φ)relationship of the fragments provide detailed information for the constituent range and their tafel slops were obtained. possible mechanisms are discussed based on the experimental results. |
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| Keywords: | REACTION MECHANISM PROPYNOL ELECTROLYSIS OF CHLORIDE |
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