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电位扫描和电解实验证明,铂电极上Ag~+离子在硝酸介质中对Ce(Ⅲ)和在硫酸介质对Co(Ⅱ)的阳极氧化都有明显的电催化作用,对于Ag~+-Ce(Ⅲ)系统,当[Ag~+]:[Ce(Ⅲ)]=1:10时,反应受扩散控制,而当[Ag~+]:[Ce(Ⅱ)]=1:100,则表现为均相化学反应控制.对该系统提出了可能的反应机理,并估计了其中均相化学反应的速度常数.二相电解实验表明,银离子的存在可使蒽或苯甲醇电解氧化的电流效率明显增加.
Potential scanning and electrolysis experiments showed that the electrocatalytic activity of Ag ~ + ions on the anodic oxidation of Ce (¢ ó) in sulfuric acid and sulfuric acid on Co (¢ ò) Ⅲ] system, the reaction is controlled by diffusion when [Ag ~ +]: [Ce (Ⅲ)] = 1:10, while when [Ag ~ +]: [Ce (Ⅱ)] = 1: 100, Homogeneous chemical reaction control.A possible reaction mechanism was proposed for this system and the velocity constants of the homogeneous chemical reactions were estimated.The two-phase electrolysis experiments show that the silver ion can make the current efficiency of anthracene or benzyl alcohol electrolysis oxidation obvious increase.