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Publication Date:
June 2011
ISSN:
1437-434X
DOI:
10.1515/hf.2011.099

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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. / Berry, Richard / Burgert, Ingo / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gellerstedt, Göran / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Heitner, Cyril / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Kleen, Marjatta / Koch, Gerald / Lachenal, Dominique / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Pizzi, Antonio / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Schwanninger, Manfred / Sipilä, Jussi / Tamminen, Tarja / Viikari, Liisa / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

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Increased IMPACT FACTOR 2011: 1.748
5-year IMPACT FACTOR: 1.838
Rank 2 out of 21 in category Materials Science, Paper & Wood and 10 out of 59 in category Forestry in the 2011 Thomson Reuters Journal Citation Report/Science Edition.

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Ionic liquids as media for biomass processing: opportunities and restrictions

11th EWLP, Hamburg, Germany, August 16–19, 2010
Michael Schrems1 / Agnieszka Brandt2, 3 / Tom Welton2 / Falk Liebner1 / Thomas Rosenau1 / 1

1Christian-Doppler-Laboratory “Advanced Cellulose Chemistry and Analytics”, Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria

2Department of Chemistry, Imperial College London, London, SW7 2AZ, UK

3The Porter Alliance, Imperial College London, London, SW7 2AZ, UK

Corresponding author

Citation Information: Holzforschung. Volume 65, Issue 4, Pages 527–533, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: 10.1515/hf.2011.099, June 2011

Publication History:
Received:
2010-12-02
Accepted:
2011-04-23
Published Online:
2011-06-10

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)

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