Journal of South China University of Technology(Natural Science) >

2015 , Vol. 43 >Issue 6: 15 - 21

DOI: https://doi.org/10.3969/j.issn.1000-565X.2015.06.003

Chemistry & Chemical Engineering

Analysis of Pyrolysis Mechanism of 5-Hydroxymethyl Furfural by Using PY-GC-MS and In-Situ FT-IR

Expand
  • School of Electric Power，South China University of Technology，Guangzhou 510640，Guangdong，China
廖艳芬(1976-)，女，教授，博士生导师，主要从事固体废弃物高效低污染燃烧研究．

Received date: 2014-11-05

  Revised date: 2015-01-20

  Online published: 2015-05-04

Supported by

Supported by the National Program on Key Basic Ｒesearch Project of China(2013CB228100)，the National Nat-ural Science Foundation of China(51476060)，and the General Administration of Quality Supervision，Inspection of Public Projects (20140159)

Fold

Abstract

Pyrolysis experiments of 5-hydroxymethyl furfural (5-HMF) were conducted and the product composi-tion was detected by using a PY-GC-MS analyzer． The results show that nearly 86% of the pyrolysis product is fu-ran ring-contained substance，and that a certain amount of small molecules exist in the product，which means that the pyrolysis process of 5-HMF is mainly a side-chain degradation process concomitantly with the fracture of furan rings． Moreover，the converting law of the product in the pyrolysis process was supervised in real time via in-situ FT-IR． The results show that furfural and 5-methyl furfural mainly form when the temperature ranges from 130 to 230℃，furfuryl alcohol and 5-formyl-2-furfurylacetate mainly form after 250 ℃ and the formation continues to the middle and later periods of the whole process，while the dominant pyrolysis product of 5-HMF，namely furan-2，5-dicarbaldehyde，forms throughout the whole pyrolysis process． According to the results obtained from fast pyrolysis experiment and in-situ FT-IR，the pyrolysis mechanism is speculated as follows: as the most primary reaction，fu-ran-2，5-dicarbaldehyde forms from two consecutive dehydrogenations and then converts into 5-methyl furfural after the dehydroxylation and hydrogenation of hydroxymethyl; the whole fracture of hydroxymethyl side chain and alde-hyde group side chain leads to the formation of furfural and furfuryl alcohol; and 2-methylfuran may be produced via the secondary pyrolysis of furfural and furfuryl alcohol．

Key words： biomass; pyrolysis; 5-hydroxymethyl furfural; PY-GC-MS; in-situ FT-IR

Cite this article

Liao Yan-fen Guo Zhen-ge Cao Ya-wen Ma Xiao-qian Lin Yan . Analysis of Pyrolysis Mechanism of 5-Hydroxymethyl Furfural by Using PY-GC-MS and In-Situ FT-IR[J]. Journal of South China University of Technology(Natural Science), 2015 , 43(6) : 15 -21 . DOI: 10.3969/j.issn.1000-565X.2015.06.003

Options
Outlines

/

〈 〉