Summary
The influence of the isomers of aminobenzoic acid on the reaction Zn(II)/Zn(Hg) was studied in water-methanol mixtures. Theo- andm-isomers accelerate this reaction in all investigated solutions. The standard rate constants are similar at the same degree of electrode coverage with these isomers in water and mixed solutions.p-Aminobenzoic acid inhibits the process of Zn(II)/Zn(Hg) electroreduction. The results suggest that the decisive role in the acceleration is played by the formation of the active complex inside the adsorption layer.
Zusammenfassung
Der Einfluß der verschiedenen Isomeren von Aminobenzoesäure auf die Reduktion von Zn(II) an einer Quecksilberelektrode wurde in Methanol-Wasser-Mischungen untersucht. Dieo- undm-Isomeren beschleunigen die Reaktion, und die Reaktionsgeschwindigkeiten sind in Wasser und in Methanol-Wasser gleich. Die Beschleunigung wird wahrscheinlich durch Bildung des aktivierten Komplexes innerhalb der Adsorptionsschicht verursacht.p-Aminobenzoesäure hemmt die Elektroreduktion.
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Marczewska, B. The influence of aminobenzoic acid on Zn(II) electroreduction on a mercury electrode in water-methanol. Monatsh Chem 128, 1223–1235 (1997). https://doi.org/10.1007/BF00807254
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DOI: https://doi.org/10.1007/BF00807254