On the electrochemical behaviour of pyruvic and lactic acids at a platinized platinum electrode in acid medium

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Abstract

The electrochemical oxidation of pyruvic and lactic acids at a platinized platinum electrode has been studied in acidic (M H2SO4) medium. The oxidation process takes place at potentials more positive than 900-1000 mV (on RHE scale). The final products are acetic acid and CO2. Unambiguous polarization measurements could be carried out only in the case of preoxidized surfaces. For the interpretation of the phenomena observed, a mechanism involving reactions of organic species with electrochemically formed OH radicals is proposed. Studying the reduction of pyruvic acid, it has been stated that, similar to the behaviour of simple aliphatic ketones, the conversion of the {A figure is presented} group into CH2 occurs to a significant extent.

Original languageEnglish
Pages (from-to)131-137
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume117
Issue number1
Publication statusPublished - 1981

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Electrochemical oxidation
Lactic acid
Platinum
Ketones
Pyruvic Acid
Acetic acid
Lactic Acid
Polarization
Oxidation
Electrodes
Acids
Acetic Acid

ASJC Scopus subject areas

  • Electrochemistry
  • Analytical Chemistry
  • Chemical Engineering(all)

Cite this

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abstract = "The electrochemical oxidation of pyruvic and lactic acids at a platinized platinum electrode has been studied in acidic (M H2SO4) medium. The oxidation process takes place at potentials more positive than 900-1000 mV (on RHE scale). The final products are acetic acid and CO2. Unambiguous polarization measurements could be carried out only in the case of preoxidized surfaces. For the interpretation of the phenomena observed, a mechanism involving reactions of organic species with electrochemically formed OH radicals is proposed. Studying the reduction of pyruvic acid, it has been stated that, similar to the behaviour of simple aliphatic ketones, the conversion of the {A figure is presented} group into CH2 occurs to a significant extent.",
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AU - Horányi, G.

PY - 1981

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N2 - The electrochemical oxidation of pyruvic and lactic acids at a platinized platinum electrode has been studied in acidic (M H2SO4) medium. The oxidation process takes place at potentials more positive than 900-1000 mV (on RHE scale). The final products are acetic acid and CO2. Unambiguous polarization measurements could be carried out only in the case of preoxidized surfaces. For the interpretation of the phenomena observed, a mechanism involving reactions of organic species with electrochemically formed OH radicals is proposed. Studying the reduction of pyruvic acid, it has been stated that, similar to the behaviour of simple aliphatic ketones, the conversion of the {A figure is presented} group into CH2 occurs to a significant extent.

AB - The electrochemical oxidation of pyruvic and lactic acids at a platinized platinum electrode has been studied in acidic (M H2SO4) medium. The oxidation process takes place at potentials more positive than 900-1000 mV (on RHE scale). The final products are acetic acid and CO2. Unambiguous polarization measurements could be carried out only in the case of preoxidized surfaces. For the interpretation of the phenomena observed, a mechanism involving reactions of organic species with electrochemically formed OH radicals is proposed. Studying the reduction of pyruvic acid, it has been stated that, similar to the behaviour of simple aliphatic ketones, the conversion of the {A figure is presented} group into CH2 occurs to a significant extent.

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