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001     878062
005     20220930130246.0
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100 1 _ |a Weidener, Dennis
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245 _ _ |a Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition
260 _ _ |a Basel
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520 _ _ |a Fractionation of lignocellulose into its three main components, lignin, hemicelluloses, and cellulose, is a common approach in modern biorefinery concepts. Whereas the valorization of hemicelluloses and cellulose sugars has been widely discussed in literature, lignin utilization is still challenging. Due to its high heterogeneity and complexity, as well as impurities from pulping, it is a challenging feedstock. However, being the most abundant source of renewable aromatics, it remains a promising resource. This work describes a fractionation procedure that aims at stepwise precipitating beech wood (Fagus sp.) lignin obtained with OrganoCat technology from a 2-methyltetrahydrofuran solution, using n-hexane and n-pentane as antisolvents. By consecutive antisolvent precipitation and filtration, lignin is fractionated and then characterized to elucidate the structure of the different fractions. This way, more defined and purified lignin fractions can be obtained. Narrowing down the complexity of lignin and separately valorizing the fractions might further increase the economic viability of biorefineries.
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700 1 _ |a Holtz, Arne
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700 1 _ |a Klose, Holger
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700 1 _ |a Jupke, Andreas
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700 1 _ |a Leitner, Walter
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700 1 _ |a Grande, Philipp M.
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773 _ _ |a 10.3390/molecules25153330
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