Application of acid catalytic hydrothermal reaction to conversion of carbohydrate biomass into valuable substances

Y. Takeuchi, Fangming Jin, H. Enomoto, Kazuyuki Tohji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Hydrothermal degradation of glucose in the presence of HCl, H 2SO4 and H3PO4 were carried out with pH varying from 1.5-2.5, reaction time varying from 1 min to 10 min at 523 K, to investigate the effect of different acid catalysts and acid concentration on the production of 5-hydroxymethyl-2-furaldehyde (HMF) and levulinic acid from glucose. At lower acid concentration, the yield of HMF was considerably high. The increase in acid concentration accelerated the conversion of HMF to levulinic acid. Among three acid catalysts, HCl is most effect for both conversion of glucose to HMF and further conversion of HMF into levulinic acid. But the decomposition of HMF is also fastest in the case of HCl catalysis. In the conditions used in this study, the highest yield of levulinic acid is about 55 %, which occurred at pH 1.5 for 5 min with HCl, and total highest yield of HMF and levulinic acid is about 50 %, which occurred at pH 2.0 for 5 min with H3PO4.

Original languageEnglish
Title of host publicationWATER DYANMICS
Subtitle of host publication4th International Workshop on Water Dynamics
Pages190-192
Number of pages3
DOIs
Publication statusPublished - 2007 May 11
Event4th International Workshop on Water Dynamics - Sendai, Japan
Duration: 2006 Nov 72006 Nov 8

Publication series

NameAIP Conference Proceedings
Volume898
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other4th International Workshop on Water Dynamics
CountryJapan
CitySendai
Period06/11/706/11/8

Keywords

  • 5-hydroxymethyl-2-furaldehyde
  • Acid catalyst
  • Glucose
  • Hydrothermal reaction
  • Levulinic acid

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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