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ECN publicatie:
Lignin-to-liquid-solvolysis (LtL) of organosolv extracted lignin
Huijgen, W.J.J.; Løhre, C.; Barth, T.; Aakre Laugerud, G.A.
Gepubliceerd door: Publicatie datum:
ECN Biomass & Energy Efficiency 11-8-2016
ECN publicatienummer: Publicatie type:
ECN-W--16-020 Artikel wetenschap tijdschrift
Aantal pagina's:

Gepubliceerd in: Sustainable Chemistry & Engineering (ACS Publications ), , 2018, Vol.6, p.3102-3112.

Utilization of lignocellulosic biomass as a future energy source is a research ?eld of widespread growth. The lignin fraction has potential as a renewable resource to provide building blocks for the chemical industry and is the most prominent source of bio-based aromatics. Lignin, combined with formic acid and water under high temperature and pressure, is converted to a bio-oil rich in alkylated phenols and aliphatic hydrocarbons in a unique conversion process termed the LtL-process (lignin-to-liquid). In this work, this conversion technique has shown to be applicable to a variety of lignins, with organosolv extracted lignin as the main focus because of its high purity. The organosolv lignins appeared to be well suited for LtL-conversion generating higher yields of bio-oil than a lignin-rich residue from enzymatic hydrolysis. 31P NMR and GC-MS showed that the O/C ratios of the bio-oils decreases with increasing reaction temperature during LtL-solvolysis because of a decrease in methoxylated phenols and an increase in phenols with no methoxy substituent. This was veri?ed by partial least-squares (PLS) regression analysis and elemental analysis of the feedstocks and resulting bio-oils, from which an e?ective hydrodeoxygenation during LtL-conversion was evident too.

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