FTIR spectroscopic investigation of pyruvate electroreduction on copper in alkaline medium On the mechanistic aspects

In this work some important aspects related to the electrocatalytic reduction of pyruvate on copper cathode were investigated in alkaline medium (0.5 mol/L NaOH). In situ IR reflectance spectroscopy (SPAIRS and SNIFTIRS techniques) was used to investigate the adsorbed intermediates and reaction prod...

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Bibliographic Details
Published inCanadian journal of chemistry Vol. 86; no. 10; pp. 992 - 995
Main Authors Martin, Cédric, Hahn, Françoise, Servat, Karine, Huser, Hervé, Tito, Duarte, Kalaji, Maher, Kokoh, K Boniface
Format Journal Article
LanguageEnglish
Published Ottawa, Canada NRC Research Press 01.10.2008
Canadian Science Publishing NRC Research Press
Subjects
Alkalies
Alkalinity
Catalysis
Chemistry
Copper
Sodium hydroxide
Spectrum analysis
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Summary:In this work some important aspects related to the electrocatalytic reduction of pyruvate on copper cathode were investigated in alkaline medium (0.5 mol/L NaOH). In situ IR reflectance spectroscopy (SPAIRS and SNIFTIRS techniques) was used to investigate the adsorbed intermediates and reaction products from the reduction of pyruvate. The results revealed that hydrogenation of the substrate to lactate occurred at the copper surface involving weakly adsorbed species. The identification of the different electroreactive species allowed to postulate a reaction mechanism for the transformation of pyruvate into lactate on copper.Key words: copper, electroreduction, pyruvate, lactate, in situ infrared reflectance spectroscopy, reaction mechanism.
ISSN:0008-4042
1480-3291
DOI:10.1139/v08-137