BARBIER, Jérémie; CHARON, Nadège; DUPASSIEUX, Nathalie; LOPPINET-SERANI, Anne; MAHÉ, Laure; PONTHUS, Jérémie; COURTIADE, Marion; DUCROZET, Annie; QUOINEAUD, Anne-Agate; CANSELL, François

doi:10.1016/j.biombioe.2012.07.011

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BARBIER, Jérémie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
IFP Energies nouvelles [IFPEN]

CHARON, Nadège
IFP Energies nouvelles [IFPEN]

DUPASSIEUX, Nathalie
IFP Energies nouvelles [IFPEN]

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Biomass and Bioenergy. 2012, vol. 46, p. 479-491

Elsevier

Résumé en anglais

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.< Réduire

Mots clés en anglais

Lignin

Hydrothermal liquefaction

Subcritical water

Reaction pathway

Alkylation

Analytical characterization

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Hydrothermal conversion of Lignin compounds. A detailled study of fragmentation and condensation reaction pathways

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