Energy Efficiency of Electrochemical Reduction of Benzaldehyde

АУТОР(И) / AUTHOR(S): Milan Nikolić , Vesna Veličković and Tomislav Trišović

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DOI: https://doi.org/10.46793/TIE26.324N

САЖЕТАК /ABSTRACT:

The energy conversion efficiency of the electrochemical reduction of benzalaldehyde was investigated. The electrochemical reduction of benzaldehyde was performed on zinc and zinc-mercury alloy coatings. The zinc coating was obtained by electrodeposition from a zinc sulphate bath. The amalgamated electrode was obtained by simple dipping the previously deposited obtained zinc coating into an aqueous solution of HgCl₂. The overvoltage for hydrogen generation was higher on amalgamated electrodes than on non-amalgamated ones, which resulted in higher efficiencies of the electrochemical reduction of benzaldehyde. An increase in ethanol and benzaldehyde concentrations resulted in a decrease in cathode overvoltage and an increase in the efficiency of the electrochemical reduction of benzaldehyde. GC-MS analysis revealed cathodic conversion of benzaldehyde into both benzyl alcohol and hydrobenzoin and anodic conversion ibto benzoic acid.

КЉУЧНЕ РЕЧИ / KEYWORDS: 

electrolysis, electroreduction, amalgamated zinc, benzaldehyde, benzyl alcohol

ПРОЈЕКАТ / ACKNOWLEDGEMENT:

The research presented in this article is funded by the Ministry of Science, Technological Development and Innovations of the Republic of Serbia, Project No. 451-03-33/2026-03/ 200088.

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