Reaction kinetics and mechanism for hydrothermal degradation and electrolysis of glucose for producing carboxylic acids

  • Mitsuru Sasaki*
  • , Takanari Oshikawa
  • , Hiroshi Watanabe
  • , Wahyudiono
  • , Motonobu Goto
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Electrolysis in subcritical water can convert biomass-derived saccharides into value-added chemicals and fuels without any additives. In this work, we aim to understand reaction behaviours of glucose under subcritical water degradation or electrochemical conditions for the purpose of developing a new method for producing useful carboxylic acids. Degradation of glucose was carried out using a continuous flow-type reactor in subcritical water at various operating conditions, and electrochemical reactions of their product solutions were conducted at identical conditions with a 500-mL batch autoclave. Gaseous products obtained were analyzed by gas chromatography-thermal conductivity detection (GC-TCD), and liquid products were analyzed by high-performance liquid chromatography (HPLC) and gas chromatography-flame ionization detection (GC-FID). The total organic carbon (TOC) in the aqueous product solution was determined by using a TOC analyzer. Based on the experimental results, a reaction pathway for glucose is proposed for subcritical water degradation and electrolysis.

Original languageEnglish
Pages (from-to)457-466
Number of pages10
JournalResearch on Chemical Intermediates
Volume37
Issue number2-5
DOIs
Publication statusPublished - Apr 2011
Externally publishedYes

Keywords

  • Carboxylic acids
  • Electrolysis
  • Glucose
  • Hydrothermal degradation

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