TY - GEN
T1 - Application of acid catalytic hydrothermal reaction to conversion of carbohydrate biomass into valuable substances
AU - Takeuchi, Y.
AU - Jin, Fangming
AU - Enomoto, H.
AU - Tohji, Kazuyuki
PY - 2007/5/11
Y1 - 2007/5/11
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.
KW - 5-hydroxymethyl-2-furaldehyde
KW - Acid catalyst
KW - Glucose
KW - Hydrothermal reaction
KW - Levulinic acid
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U2 - 10.1063/1.2721278
DO - 10.1063/1.2721278
M3 - Conference contribution
AN - SCOPUS:34248180679
SN - 0735404038
SN - 9780735404038
T3 - AIP Conference Proceedings
SP - 190
EP - 192
BT - WATER DYANMICS
T2 - 4th International Workshop on Water Dynamics
Y2 - 7 November 2006 through 8 November 2006
ER -