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Lignin‐First Fracti...
Lignin‐First Fractionation of Softwood Lignocellulose Using a Mild Dimethyl Carbonate and Ethylene Glycol Organosolv Process
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- De Santi, Alessandra (författare)
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 Groningen The Netherlands
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- Galkin, Maxim V. (författare)
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 Groningen The Netherlands
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- Lahive, Ciaran W. (författare)
- Department of Chemical Engineering (ENTEG) University of Groningen Nijenborgh 4 Groningen The Netherlands
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- Deuss, Peter J. (författare)
- Department of Chemical Engineering (ENTEG) University of Groningen Nijenborgh 4 Groningen The Netherlands
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- Barta, Katalin (författare)
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 Groningen The Netherlands;Department of Chemistry, Organic and Bioorganic Chemistry University of Graz Heinrichstrasse 28/II 8010 Graz Austria
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(creator_code:org_t)
- 2020-03-31
- 2020
- Engelska.
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Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 13:17, s. 4468-4477
- Relaterad länk:
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https://pure.rug.nl/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A mild lignin-first acidolysis process (140 °C, 40 min) was developed using the benign solvent dimethyl carbonate (DMC) and ethylene glycol (EG) as a stabilization agent/solvent to produce a high yield of aromatic monophenols directly from softwood lignocellulose (pine, spruce, cedar, and Douglas fir) with a depolymerization efficiency of 77–98 %. Under the optimized conditions (140 °C, 40 min, 400 wt % EG and 2 wt % H2SO4 to pinewood), up to 9 wt % of the aromatic monophenol was produced, reaching a degree of delignification in pinewood of 77 %. Cellulose was also preserved, as evidenced by a 85 % glucose yield after enzymatic digestion. An in-depth analysis of the depolymerization oil was conducted by using GC-MS, HPLC, 2 D-NMR, and size-exclusion chromatography, which provided structural insights into lignin-derived dimers and oligomers and the composition of the sugars and derived molecules. Mass balance evaluation was performed.
Ämnesord
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
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