کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
677182 | 1459847 | 2012 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Hydrothermal conversion of lignin compounds. A detailed study of fragmentation and condensation reaction pathways Hydrothermal conversion of lignin compounds. A detailed study of fragmentation and condensation reaction pathways](/preview/png/677182.png)
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.
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► Hydrothermal conversion pathway of lignin is investigated in this work.
► An original experimental method has been developed.
► We have used model compounds and a new multitechnique analytical approach.
Journal: Biomass and Bioenergy - Volume 46, November 2012, Pages 479–491