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Article

Manufacture of Platform Chemicals from Pine Wood Polysaccharides in Media Containing Acidic Ionic Liquids

Chemical Engineering Department, University of Vigo (Campus Ourense), Polytechnical Building, As Lagoas, 32004 Ourense, Spain
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Polymers 2020, 12(6), 1215; https://doi.org/10.3390/polym12061215
Received: 4 May 2020 / Revised: 21 May 2020 / Accepted: 25 May 2020 / Published: 27 May 2020
(This article belongs to the Special Issue Cellulose and the Circular Economy)
Pinus pinaster wood samples were subjected to chemical processing for manufacturing furans and organic acids from the polysaccharide fractions (cellulose and hemicellulose). The operation was performed in a single reaction stage at 180 or 190 °C, using a microwave reactor. The reaction media contained wood, water, methyl isobutyl ketone, and an acidic ionic liquid, which acted as a catalyst. In media catalyzed with 1-butyl-3-methylimidazolium hydrogen sulfate, up to 60.5% pentosan conversion into furfural was achieved, but the conversions of cellulose and (galacto) glucomannan in levulinic acid were low. Improved results were achieved when AILs bearing a sulfonated alkyl chain were employed as catalysts. In media containing 1-(3-sulfopropyl)-3-methylimidazolium hydrogen sulfate as a catalyst, near quantitative conversion of pentosans into furfural was achieved at a short reaction time (7.5 min), together with 32.8% conversion of hexosans into levulinic acid. Longer reaction times improved the production of organic acids, but resulted in some furfural consumption. A similar reaction pattern was observed in experiments using 1-(3-sulfobutyl)-3-methylimidazolium hydrogen sulfate as a catalyst. View Full-Text
Keywords: cellulose; hemicelluloses; wood polysaccharides; platform chemicals; acidic ionic liquid cellulose; hemicelluloses; wood polysaccharides; platform chemicals; acidic ionic liquid
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MDPI and ACS Style

López, M.; Vila, C.; Santos, V.; Parajó, J.C. Manufacture of Platform Chemicals from Pine Wood Polysaccharides in Media Containing Acidic Ionic Liquids. Polymers 2020, 12, 1215. https://doi.org/10.3390/polym12061215

AMA Style

López M, Vila C, Santos V, Parajó JC. Manufacture of Platform Chemicals from Pine Wood Polysaccharides in Media Containing Acidic Ionic Liquids. Polymers. 2020; 12(6):1215. https://doi.org/10.3390/polym12061215

Chicago/Turabian Style

López, Mar, Carlos Vila, Valentín Santos, and Juan Carlos Parajó. 2020. "Manufacture of Platform Chemicals from Pine Wood Polysaccharides in Media Containing Acidic Ionic Liquids" Polymers 12, no. 6: 1215. https://doi.org/10.3390/polym12061215

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