Glycerol electro-oxidation at Pt in alkaline media: influence of mass transport and cations

Author(s)

Melle, Gabriel ^{[1, 2]} ; de Souza, Matheus B. C. ^[3] ; Santiago, Patricia V. B. ^{[3, 4]} ; Corradini, Patricia Gon ^{[1, 5]} ; Mascaro, Lucia Helena ^{[1, 4]} ; Fernandez, Pablo S. ^{[3, 4]} ; Sitta, Elton ^{[1, 4]}

Affiliation

^[1] Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Alicante, Inst Electroquim, Apdo 99, E-03080 Alicante - Spain

^[3] States Univ Campinas, Inst Chem, UNICAMP, BR-13083970 Campinas, SP - Brazil

^[4] Ctr Innovat New Energies CINE, BR-13083841 Campinas, SP - Brazil

^[5] Fluminense Fed Inst Educ Sci & Technol, Campus Itaperuna, BR-28300000 Itaperuna, RJ - Brazil

• Document type: Journal article
• Source: Electrochimica Acta; v. 398, DEC 1 2021.
• Web of Science Citations: 0

Abstract

Glycerol is an important biomass-derived product with potential to be applied on energy converting systems or as platform molecule in electrosynthesis. In this work we studied the glycerol oxidation reaction (GOR) in alkaline media containing distinct alkaline cations and controlling the mass transport. The cyclic voltammograms were deconvoluted into three processes and the changes in the charge of each process revealed that mass transport affects the GOR in a complex matter, depending on both applied potential and electrolyte cation. Regardless of the cation on supporting electrolyte, high-performance liquid chromatography (HPLC) analysis revealed the production of glycerate and lactate during GOR. Finally, potential oscillations under current control were mapped, highlighting the influence of both cations and mass transport, even in the systems with very similar behavior under potential control. (c) 2021 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 19/00305-2 - Development of p-block adatom-modified platinum electrocatalysts for the electrochemical conversion of glycerol in alkaline medium
• Grantee: Matheus Batista Cordeiro de Souza
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 14/50249-8 - Green chemistry: sustainable synthetic methods employing benign solvents, safer reagents, and bio-renewable feedstock
• Grantee: Arlene Gonçalves Corrêa
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
• Grantee: Ana Flávia Nogueira
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 18/20952-0 - Applied and fundamental studies of the electrochemical conversion of alcohols and CO2
• Grantee: Pablo Sebastián Fernández
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants