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

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

doi:10.1063/1.2721278

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

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

ENV - Environmental Studies for Advanced Society

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	WATER DYANMICS
Subtitle of host publication	4th International Workshop on Water Dynamics
Pages	190-192
Number of pages	3
DOIs	https://doi.org/10.1063/1.2721278
Publication status	Published - 2007 May 11
Event	4th International Workshop on Water Dynamics - Sendai, Japan Duration: 2006 Nov 7 → 2006 Nov 8

Publication series

Name	AIP Conference Proceedings
Volume	898
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	4th International Workshop on Water Dynamics
Country	Japan
City	Sendai
Period	06/11/7 → 06/11/8

Keywords

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

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2721278

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Application of acid catalytic hydrothermal reaction to conversion of carbohydrate biomass into valuable substances. / Takeuchi, Y.; Jin, Fangming; Enomoto, H.; Tohji, Kazuyuki.

WATER DYANMICS: 4th International Workshop on Water Dynamics. 2007. p. 190-192 (AIP Conference Proceedings; Vol. 898).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Takeuchi, Y, Jin, F, Enomoto, H & Tohji, K 2007, Application of acid catalytic hydrothermal reaction to conversion of carbohydrate biomass into valuable substances. in WATER DYANMICS: 4th International Workshop on Water Dynamics. AIP Conference Proceedings, vol. 898, pp. 190-192, 4th International Workshop on Water Dynamics, Sendai, Japan, 06/11/7. https://doi.org/10.1063/1.2721278

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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.",

keywords = "5-hydroxymethyl-2-furaldehyde, Acid catalyst, Glucose, Hydrothermal reaction, Levulinic acid",

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N2 - 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.

AB - 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.

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