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Gewählte Publikation:

Schrems, M; Brandt, A; Welton, T; Liebner, F; Rosenau, T; Potthast, A.
(2011): Ionic liquids as media for biomass processing: opportunities and restrictions
HOLZFORSCHUNG. HOLZFORSCHUNG; 65: 527-533. FullText FullText_BOKU

Abstract:
The present study provides insight into the dissolution behavior of renewable materials in ionic liquids. Beech, spruce and rye straw were dissolved in 1-ethyl-3-methylimidazolium acetate as the ionic liquid of choice, which is currently one of the most frequently used cation-anion combinations among ionic liquids for biomaterial processing. The dissolution was followed by selective precipitation of cellulose, hemicelluloses, and lignin. The obtained lignin was analyzed with Curie-point pyrolysis gas chromatography/mass spectrometry (Cu-Py-GC/MS) and the separated cellulose/hemicellulose fractions with gel permeation chromatography (GPC). Time dependence of the dissolution process was studied on rye straw, eucalyptus kraft pulp and beech sulfite pulp. The results show a changing dissolution profile over time, which is due to progressing degradation of the cellulose in the ionic liquid.
Autor/innen der BOKU Wien:
Liebner Falk
Potthast Antje
Rosenau Thomas
Schrems Michael
BOKU Gendermonitor:


Find related publications in this database (Keywords)
cellulose
cellulose degradation
Curie-point pyrolysis gas chromatography/mass spectrometry (Cu-Py-GC/MS)
fractionation
ionic liquids (ILs)
lignin
molecular weight distribution (MWD)
renewable materials
size-exclusion chromatography (SEC)


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