Brønsted and Lewis acid catalyzed conversion of pulp industry waste biomass to levulinic acid
Lappalainen, K., Kuorikoski, E., Vanvyve, E., Dong, Y., Kärkkäinen, J., Niemelä, M., & Lassi, U. (2019). Brønsted and Lewis acid catalyzed conversion of pulp industry waste biomass to levulinic acid. Bioresources, 14(3), 7025-7040. https://bioresources.cnr.ncsu.edu/resources/bronsted-and-lewis-acid-catalyzed-conversion-of-pulp-industry-waste-biomass-to-levulinic-acid/
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BioresourcesAuthors
Date
2019Copyright
© 2019 the Authors.
Enormous amounts of fiber sludge are generated annually by the pulp industry as a by-product. As a cellulose-rich material, its current usage, mainly as fuel, is inefficient from a material efficiency point of view. This work studied the utilization of fiber sludge from a Finnish and a Swedish pulp mill as a potential feedstock to produce levulinic acid, a valuable platform chemical. The conversion experiments of fiber sludge to levulinic acid were performed in a microwave reactor with a mixture of H2SO4 and Lewis acid as the catalyst. The reaction conditions, which included reaction time and temperature as well as the H2SO4 and Lewis acid concentrations, were studied in detail. The highest levulinic acid yield, 56%, was obtained with Swedish fiber sludge after 60 min at 180 °C with the H2SO4 concentration of 0.3 mol/L and a CrCl3 concentration of 7.5 mmol/L which indicated that the fiber sludge had the potential to be used as feedstock for levulinic acid production.
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Department of Forest Biomaterials, North Carolina State UniversityISSN Search the Publication Forum
1930-2126Keywords
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https://bioresources.cnr.ncsu.edu/resources/bronsted-and-lewis-acid-catalyzed-conversion-of-pulp-industry-waste-biomass-to-levulinic-acid/Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/32430366
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European CommissionFunding program(s)
Interreg Programmes; Interreg, others
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about funding
This work was financially supported by Bioraff Botnia project (No. 20200327, EU/Interreg Botnia-Atlantica), Green Bioraff Solutions project (No. 20201508, EU/Interreg Botnia-Atlantica), Maj and Tor Nessling Foundation (Grant No. 201800070), Otto Malm Foundation and Oulun Läänin Talousseuran Maataloussäätiö.License
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