Journal of Analytical and Applied Pyrolysis 126 (2017) 371–379 Contents lists available at ScienceDirect Journal of Analytical and Applied Pyrolysis journal homepage: www.elsevier.com/locate/jaap Products of hydrothermal treatment of lignin and the importance of ortho- MARK directed repolymerization reactions Mads M. Jensen, René B. Madsen, Jacob Becker, Bo B. Iversen, Marianne Glasius Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark ARTICLE I NFO ABSTRACT Keywords: Alkaline hydrothermal treatment (HTT) of Protobind 1000 lignin was studied to improve the understanding of Lignin conversion lignin conversion paths. HTT was performed at 300 °C using NaOH as base catalyst. Product separation by Hydrothermal treatment acidiﬁcation and solvent fractionation resulted in a liquid product of low molecular mass and narrow molecular Base-catalyzed depolymerization mass distribution and two high molecular mass solid fractions. Twenty volatile compounds accounted for about Repolymerization reactions 36 wt% of the liquid product, however, the analysis by liquid injection GC–MS was estimated to detect only Analytical pyrolysis about 12 wt% of the total products. Analytical pyrolysis was applied to investigate the pyrolyzable fraction of the Py-GC–MS liquid product and the high molecular mass fractions. The pyrolyzable mass accounted for 49 wt% of the total products. The
Journal of Analytical and Applied Pyrolysis – Elsevier
Published: Jul 1, 2017
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