Reaction mechanism of low-temperature fast pyrolysis of fructose to produce 5-hydroxymethyl furfural

LU Qiang; LIAO Hang-tao; ZHANG Yang; ZHANG Jun-jiao; DONG Chang-qing

Volume 41 Issue 09

Sep. 2013

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Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(09): 1070-1076

LU Qiang, LIAO Hang-tao, ZHANG Yang, ZHANG Jun-jiao, DONG Chang-qing. Reaction mechanism of low-temperature fast pyrolysis of fructose to produce 5-hydroxymethyl furfural[J]. Journal of Fuel Chemistry and Technology, 2013, 41(09): 1070-1076.

Citation:

LU Qiang, LIAO Hang-tao, ZHANG Yang, ZHANG Jun-jiao, DONG Chang-qing. Reaction mechanism of low-temperature fast pyrolysis of fructose to produce 5-hydroxymethyl furfural[J]. Journal of Fuel Chemistry and Technology, 2013, 41(09): 1070-1076.

Citation:

LU Qiang, LIAO Hang-tao, ZHANG Yang, ZHANG Jun-jiao, DONG Chang-qing. Reaction mechanism of low-temperature fast pyrolysis of fructose to produce 5-hydroxymethyl furfural[J]. Journal of Fuel Chemistry and Technology, 2013, 41(09): 1070-1076.

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Reaction mechanism of low-temperature fast pyrolysis of fructose to produce 5-hydroxymethyl furfural

National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China

Received Date: 2013-02-26
Rev Recd Date: 2013-05-01
Publish Date: 2013-09-30

Abstract

Abstract

Low-temperature fast pyrolysis of fructose offered a promising way to produce 5-hydroxymethyl furfural (HMF) together with furfural (FF) as an important by-product. In this work, pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) measurements were performed to investigate the product distribution from fast pyrolysis of fructose; the effects of pyrolysis temperature on the HMF formation behaviors were considered. The results indicated that HMF is the predominant product from the fast pyrolysis of fructose; the product mixture with highest content of HMF (81.2%, determined by the gas chromatography peak areas) is obtained at 250 ℃, while the maximal yield of HMF is achieved at 350 ℃. Five possible pathways of HMF formation from fructose were considered by density functional theory (DFT). The DFT calculation results suggested that pathway 1 is most energetically favored, i.e. fructose molecule first undergoes a dehydration process by losing -OH at C2 and -H at C1 and then it is subjected to subsequent dehydrations involving -OH at C3 and -H of hydroxyl group at C1 as well as -OH at C4 and -H at C5, to form HMF.
- fructose,
- fast pyrolysis,
- 5-hydroxymethyl furfural,
- Py-GC/MS,
- density functional theory

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References(22)

References

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