Density functional theory study of glyceraldehyde conversion in supercritical water

Tetsuo Honma, Hiroshi Inomata

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Density functional theory calculations of glyceraldehyde conversion were performed to elucidate the relative reactivity between dehydration and retro-aldol reaction. In this study, structures and energies of the reaction system were determined by B3LYP/AUG-cc-pVDZ level of theory to explore the catalytic role of water molecule. The water-assisted retro-aldol reaction is the most favorable pathway among glyceraldehyde conversion. Water molecule participation in the reaction system lowered the threshold energies for both reaction pathways, suggesting that a water molecule acts as homogeneous catalyst. Comparing the threshold energy values between non-water and water-assisted mechanisms, the threshold energy difference in dehydration was found to be greater than that in the retro-aldol reaction. This large catalytic water influence on the dehydration means that the glyceraldehyde dehydration is more enhanced at fairly higher density conditions. The reaction analysis in terms of water molecule participation can explain the influence of supercritical water density upon the glucose conversion and the catalytic role of water molecule in molecular level.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Supercritical Fluids
Volume90
DOIs
Publication statusPublished - 2014 Jun

Keywords

  • Glucose conversion
  • Glyceraldehyde
  • Quantum chemistry
  • Supercritical water
  • Water-catalyzed hydrolysis

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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