Enhancement of ionic liquid-aided fractionation of birchwood. Part 1: autohydrolysis pretreatment
作者： Lauri K. J. Hauru , Yibo Ma , Michael Hummel , Marina Alekhina , Alistair W. T. King
DOI: 10.1039/C3RA41529E
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摘要: Ionic liquid-cosolvent systems have been proposed as selective solvent media for lignocellulosic materials. We present the ionic liquid-aided fractionation of silver birch (Betula pendula) combined with an autohydrolysis pretreatment. Contrary to untreated birchwood meal, autohydrolyzed meal reveals quantitative dissolution in 1-ethyl-3-methylimidazolium acetate and distinct separation into individual wood polymers upon regeneration acetone/water. The process yields two main fractions, a cellulose-rich precipitate residual lignin content 13–15% another virtually pure fraction. No cellulose yield loss is observed during liquid processing step. A comprehensive mass balance process, including insoluble material, wash waters, soluble residues, provided. product fractions are characterised their chemical compositions, molar distributions structural characteristics by Klason sugar analysis, 13C NMR, GPC WAXS. study investigates effects particle size intensity on efficiency selectivity.
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sci-hub.se 参考文章(28)
Stephen Y. Lin, Carlton W. Dence, Methods in Lignin Chemistry ,(1992)
Mario Fasching, Philipp Schröder, R. Petra Wollboldt, Hedda K. Weber, Herbert Sixta, A new and facile method for isolation of lignin from wood based on complete wood dissolution Holzforschung. ,vol. 62, pp. 15- 23 ,(2008) , 10.1515/HF.2008.003
Dongbao Fu, Giuseppe Mazza, Yukihiro Tamaki, Lignin Extraction from Straw by Ionic Liquids and Enzymatic Hydrolysis of the Cellulosic Residues Journal of Agricultural and Food Chemistry. ,vol. 58, pp. 2915- 2922 ,(2010) , 10.1021/JF903616Y
Ilkka Kilpeläinen, Haibo Xie, Alistair King, Mari Granstrom, Sami Heikkinen, Dimitris S. Argyropoulos, Dissolution of wood in ionic liquids. Journal of Agricultural and Food Chemistry. ,vol. 55, pp. 9142- 9148 ,(2007) , 10.1021/JF071692E
Luca Zoia, Alistair W. T. King, Dimitris S. Argyropoulos, Molecular weight distributions and linkages in lignocellulosic materials derivatized from ionic liquid media. Journal of Agricultural and Food Chemistry. ,vol. 59, pp. 829- 838 ,(2011) , 10.1021/JF103615E
Alistair W. T. King, Luca Zoia, Ilari Filpponen, Anna Olszewska, Haibo Xie, Ilkka Kilpeläinen, Dimitris S. Argyropoulos, In situ determination of lignin phenolics and wood solubility in imidazolium chlorides using 31P NMR. Journal of Agricultural and Food Chemistry. ,vol. 57, pp. 8236- 8243 ,(2009) , 10.1021/JF901095W
Ning Sun, Mustafizur Rahman, Ying Qin, Mirela L. Maxim, Héctor Rodríguez, Robin D. Rogers, Complete dissolution and partial delignification of wood in the ionic liquid 1-ethyl-3-methylimidazolium acetate Green Chemistry. ,vol. 11, pp. 646- 655 ,(2009) , 10.1039/B822702K
Ewellyn A. Capanema, Mikhail Yu. Balakshin, John F. Kadla, Quantitative Characterization of a Hardwood Milled Wood Lignin by Nuclear Magnetic Resonance Spectroscopy Journal of Agricultural and Food Chemistry. ,vol. 53, pp. 9639- 9649 ,(2005) , 10.1021/JF0515330
L. Jin, T. Sellers, T.P. Schultz, D.D. Nicholas, Utilization of lignin modified by brown-rot fungi. I. Properties of flakeboard produced with a brown-rotted lignin modified phenolic adhesive. Holzforschung. ,vol. 44, pp. 207- 210 ,(1990) , 10.1515/HFSG.1990.44.3.207
Mario Fasching, Andreas Griebl, Gottfried Kandioller, Andrea Zieher, Hedda Weber, Herbert Sixta, Prehydrolysis Sulfite Revisited Macromolecular Symposia. ,vol. 223, pp. 225- 238 ,(2005) , 10.1002/MASY.200550516