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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Insight into the Electrooxidation Mechanism of Ethylene Glycol on Palladium-Based Nanocatalysts: In Situ FTIRS and LC-MS Analysis

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Author(s):
Da Silva, Rodrigo Garcia [1, 2] ; Rodrigues de Andrade, Adalgisa [1] ; Servat, Karine [2] ; Morais, Claudia [2] ; Napporn, Teko W. [2] ; Kokoh, Kouakou B. [2]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Dept Quim, Fac Filosofia Ciencias & Letras Ribeirao Preto, BR-14040901 Ribeirao Preto - Brazil
[2] Univ Poitiers, Dept Chem, IC2MP CNRS UMR 7285, 4 Rue Michel Brunet B27, TSA 51106, F-86073 Poitiers 9 - France
Total Affiliations: 2
Document type: Journal article
Source: CHEMELECTROCHEM; v. 7, n. 21 SEP 2020.
Web of Science Citations: 0
Abstract

The ethylene glycol oxidation reaction on nickel and ruthenium modified palladium nanocatalysts was investigated with electrochemical, spectroelectrochemical, and chromatographic methods. These carbon-supported materials, prepared by a revisited polyol approach, exhibited high activity towards the ethylene glycol electrooxidation in alkaline medium. Electrolysis coupled with high performance liquid chromatography/mass spectrometry (HPLC-MS) and in situ Fourier transform infrared spectroscopy (FTIRS) measurements allowed us to determine the different compounds electrogenerated in the oxidative conversion of this two-carbon molecule. High value-added products such as oxalate, glyoxylate, and glycolate were identified in all electrolytic solutions, whereas glyoxylate was selectively formed at the Ru-45@Pd-55/C electrode surface. In situ FTIRS results also showed a decrease in the pH value in the thin layer near the electrode as a consequence of OH(-)consumption during the spectroelectrochemical experiments. (AU)

FAPESP's process: 12/07654-3 - Preparation and characterization of bioanodos for biofuel cell glucose/O2 using PAMAM dendrimer as immobilization matrix
Grantee:Laís Boracini Crepaldi
Support type: Scholarships in Brazil - Master