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用MSCV法研究了烯丙醇在多孔Pt电极上0.5mol·dm~(-3)KClO_4中的电还原.烯丙醇电还原时主要涉及二类反应:烯丙基上C—OH断键生成丙烯;丙烯进一步氢化生成丙烷.表征丙烯及丙烷的诸碎片m/z的质谱电流(I_M)-电极电位(φ)扫描曲线详细描绘了各分步反应的状况.在一定电位范围,各m/z的IgI_M-φ呈线性;求得各有关m/z的Tafel斜率.根据实验结果对反应机理进得了详细分析.
The electroreduction of allyl alcohol in 0.5mol · dm -3 KClO_4 on porous Pt electrode was studied by MSCV method.Electric reduction of allyl alcohol mainly involved two kinds of reactions: the formation of C-OH bond on allyl Propylene was further hydrogenated to form propane.The mass spectrum current (I_M) -electrode potential (φ) characterization of m / z fractions of propylene and propane gave detailed depictions of the conditions of each step reaction.At a certain potential range, each m / The IgI_M-φ of z is linear, and the Tafel slope of each m / z is obtained. The reaction mechanism is analyzed in detail according to the experimental results.