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

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  • معلومة اضافية
    • Contributors:
      Institut de chimie des milieux et matériaux de Poitiers UMR 7285 (IC2MP Poitiers ); Université de Poitiers = University of Poitiers (UP)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS); Universidade de São Paulo, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Departamento de Química, Ribeirão Preto; This work was mainly supported by FAPESP (grants number 2013/25.632-0; 2012/07654-3 and 2013-25421-9). The collaborative program CAPES/COFECUB under grant n° 914/18 are gratefully acknowledged. The authors also thanks Capes under the contract number 001. The authors also acknowledge the financial support from the European Union (ERDF) and “Région Nouvelle-Aquitaine”
    • بيانات النشر:
      HAL CCSD
      Wiley-VCH
    • الموضوع:
      2020
    • Collection:
      Institut national des sciences de l'Univers: HAL-INSU
    • نبذة مختصرة :
      International audience ; 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 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 the electrolytic solutions, while glyoxylate was selectively formed at the Ru45@Pd55/C electrode surface. In situ FTIRS results also showed a decrease of the pH value in the thin layer near the electrode as a consequence of OH- consumption during the spectroelectrochemical experiments.
    • الرقم المعرف:
      10.1002/celc.202001019
    • الدخول الالكتروني :
      https://hal.science/hal-03049212
      https://hal.science/hal-03049212v1/document
      https://hal.science/hal-03049212v1/file/Manuscrit-Rodrigo-CEC-2020.pdf
      https://doi.org/10.1002/celc.202001019
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.95C0AF26