Effect of alcohol concentration and electrode composition on the ethanol electrochemical oxidation

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Published: Dec 22, 2003
DOI: https://doi.org/10.26850/1678-4618eqj.v28.2.2003.p87-92
Keywords:
electrocatalysis, platinum-rhodium, DEMS, reaction pathways

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Kleber Bergamaski
Universidade de São Paulo, Instituto de Química, São Carlos, Brasil.
Janaína Fernandes Gomes
Universidade de São Paulo, Instituto de Química, São Carlos, Brasil.
Beatriz Eleuterio Goi
Universidade de São Paulo, Instituto de Química, São Carlos, Brasil.
Francisco Carlos Nart
Universidade de São Paulo, Instituto de Química, São Carlos, Brasil.

Abstract

The electrochemical oxidation on platinum and platinum rhodium bimetallic electrodes was
studied by Differential Electrochemical Mass Spectrometry for several ethanol concentrations in solution.
It is found that increasing the ethanol concentration the production of the partially oxidized products
(acetaldehyde) increases as the concentration increases. On the other hand, addition of 25% at. of rhodium
increases the full oxidation to CO 2 . Another interesting result observed is a correlation between the
intensity of the dehydrogenations peak at 0.3 V vs. RHE and the CO 2 yield for the different ethanol
concentration studied.

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How to Cite
Bergamaski, K., Gomes, J. F., Goi, B. E., & Nart, F. C. (2003). Effect of alcohol concentration and electrode composition on the ethanol electrochemical oxidation. Eclética Química, 28(2), 87–92. https://doi.org/10.26850/1678-4618eqj.v28.2.2003.p87-92
Issue
Vol. 28 No. 2 (2003): Eclética Química
Section
Original articles
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