Hydrothermal conversion of Lignin compounds. A detailled study of fragmentation and condensation reaction pathways
BARBIER, Jérémie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
IFP Energies nouvelles [IFPEN]
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Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
IFP Energies nouvelles [IFPEN]
BARBIER, Jérémie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
IFP Energies nouvelles [IFPEN]
< Reduce
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
IFP Energies nouvelles [IFPEN]
Language
en
Article de revue
This item was published in
Biomass and Bioenergy. 2012, vol. 46, p. 479-491
Elsevier
English Abstract
The hydrothermal conversion takes advantage of the singular physico-properties of the hot and compressed water which can be considered as a green solvent. The hydrothermal conversions of an alkali lignin and of phenolic ...Read more >
The hydrothermal conversion takes advantage of the singular physico-properties of the hot and compressed water which can be considered as a green solvent. The hydrothermal conversions of an alkali lignin and of phenolic model compounds (vanillin, monobenzone, 2,2′-biphenol) have been studied at 370 and 390 °C, at 25 MPa between 5 and 40 min. Polydispersity of products in term of both chemical structures and molecular weights has been characterized through a new analytical approach combining chromatographic (GC) and spectrometric techniques (Fourier transform ion cyclotron mass spectrometry FT-ICR/MS, NMR). From our experiments, it is clear that lignin conversion occurs via a complex reaction pathway where competitive fragmentation and condensation reactions occur. An original reaction pathway has been suggested from the main emphasized reactions.Read less <
English Keywords
Lignin
Hydrothermal liquefaction
Subcritical water
Reaction pathway
Alkylation
Analytical characterization
Origin
Hal imported