Reaction mechanism of sugar derivatives in subcritical and supercritical water

Kohtaro Goto, Kiyohiko Tajima, Mitsuru Sasaki, Tadafumi Adschiri, Kunio Arai

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


For development of a process of recovering chemicals from biomass by using supercritical water as a reactor solvent, a mechanistic study has been conducted for the reaction of D-glucose and D-fructose in sub- and supercritical water. A series of experiments was conducted over wide ranges of reaction temperature (350Ο450°C), pressure (25Ο40 MPa), and reaction times (0.02Ο1.02 s) with a flow type rector. As a result, we found that the contribution of retro-aldol condensation became predminonant at higher temperatures, while that of dehydration reaction 99(formation of furan derivatives) became significant at lower temperatures. In supercritical condition, retro-aldol condensation became essential for reducing reaction pressure, against the dehydration reaction.

Original languageEnglish
Pages (from-to)685-691
Number of pages7
JournalKobunshi Ronbunshu
Issue number12
Publication statusPublished - 2001 Dec


  • D-fructose
  • D-glucose
  • Dehydration reaction
  • Retro-aldol condensation
  • Subcritical water
  • Supercritical water


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