Electrochemical Production of Glycolic Acid from Oxalic Acid Using a Polymer Electrolyte Alcohol Electrosynthesis Cell Containing a Porous TiO2 Catalyst

Masaaki Sadakiyo, Shinichi Hata, Xuedong Cui, Miho Yamauchi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A liquid flow-Type electrolyser that continuously produces an alcohol from a carboxylic acid was constructed by employing a polymer electrolyte, named a polymer electrolyte alcohol electrosynthesis cell (PEAEC). Glycolic acid (GC, an alcoholic compound) is generated on anatase TiO2 catalysts via four-electron reduction of oxalic acid (OX, a divalent carboxylic acid), accompanied with water oxidation, which achieves continuous electric power storage in easily stored GC. Porous anatase TiO2 directly grown on Ti mesh (TiO2/Ti-M) or Ti felt (TiO2/Ti-F) was newly fabricated as a cathode having favourable substrate diffusivity. A membrane-electrode assembly composed of the TiO2/Ti-M, Nafion 117, and an IrO2 supported on a gas-diffusion carbon electrode (IrO2/C) was applied to the PEAEC. We achieved a maximum energy conversion efficiency of 49.6% and a continuous 99.8% conversion of 1 M OX, which is an almost saturated aqueous solution at room temperature.

Original languageEnglish
Article number17032
JournalScientific reports
Volume7
Issue number1
DOIs
Publication statusPublished - Dec 1 2017

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glycolic acid
Oxalic Acid
Electrolytes
Polymers
Alcohols
Carboxylic Acids
Catalysts
Electrodes
Diffusion in gases
Energy conversion
Conversion efficiency
Cathodes
Carbon
Membranes
Oxidation
Electrons
Water
Liquids
Substrates

All Science Journal Classification (ASJC) codes

  • General

Cite this

Electrochemical Production of Glycolic Acid from Oxalic Acid Using a Polymer Electrolyte Alcohol Electrosynthesis Cell Containing a Porous TiO2 Catalyst. / Sadakiyo, Masaaki; Hata, Shinichi; Cui, Xuedong; Yamauchi, Miho.

In: Scientific reports, Vol. 7, No. 1, 17032, 01.12.2017.

Research output: Contribution to journalArticle

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