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Holzforschung

International Journal of the Biology, Chemistry, Physics, and Technology of Wood

Editor-in-Chief: Faix, Oskar

Editorial Board Member: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Salmen, Lennart / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Burgert, Ingo / Rio, Jose C. / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Koch, Gerald / Lachenal, Dominique / Laine, Christiane / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Potthast, Antje / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Sipilä, Jussi / Takano, Toshiyuki / Tamminen, Tarja / Theliander, Hans / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

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1437-434X
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Volume 65, Issue 4 (Jun 2011)

Issues

Ionic liquids as media for biomass processing: opportunities and restrictions

11th EWLP, Hamburg, Germany, August 16–19, 2010

Michael Schrems
  • Christian-Doppler-Laboratory “Advanced Cellulose Chemistry and Analytics”, Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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/ Agnieszka Brandt
  • Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
  • The Porter Alliance, Imperial College London, London, SW7 2AZ, UK
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/ Tom Welton / Falk Liebner
  • Christian-Doppler-Laboratory “Advanced Cellulose Chemistry and Analytics”, Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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/ Thomas Rosenau
  • Christian-Doppler-Laboratory “Advanced Cellulose Chemistry and Analytics”, Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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/ Antje Potthast
  • Christian-Doppler-Laboratory “Advanced Cellulose Chemistry and Analytics”, Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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Published Online: 2011-06-10 | DOI: https://doi.org/10.1515/hf.2011.099

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.

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)

About the article

Corresponding author


Received: 2010-12-02

Accepted: 2011-04-23

Published Online: 2011-06-10

Published in Print: 2011-06-01


Citation Information: Holzforschung, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: https://doi.org/10.1515/hf.2011.099.

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