Hydrothermal conversion of lignin compounds. A detailed study of fragmentation and condensation reaction pathways

被引：158

作者：

Barbier, Jeremie ^{[1
]}

Charon, Nadege ^{[1
]}

Dupassieux, Nathalie ^{[1
]}

Loppinet-Serani, Anne ^{[2
]}

Mahe, Laure ^{[1
]}

Ponthus, Jeremie ^{[1
]}

Courtiade, Marion ^{[1
]}

Ducrozet, Annie ^{[1
]}

Quoineaud, Anne-Agathe ^{[1
,2
]}

Cansell, Francois

机构：

[1] IFP Energies Nouvelles, Rond Point Echangeur Solaize, F-69360 Solaize, France

[2] Univ Bordeaux, CNRS, ICMCB, IPB ENSCPB, F-33608 Pessac, France

来源：

BIOMASS & BIOENERGY | 2012年 / 46卷

关键词：

Lignin; Hydrothermal liquefaction; Subcritical water; Reaction pathway; Alkylation; Analytical characterization; SUPERCRITICAL WATER; CHEMICAL-REACTIONS; BIOMASS; CELLULOSE; CHEMISTRY; GLUCOSE;

D O I：

10.1016/j.biombioe.2012.07.011

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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 degrees 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. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：479 / 491

页数：13

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