Sökning: onr:"swepub:oai:DiVA.org:umu-87822" > Switchable ionic li...
Fältnamn | Indikatorer | Metadata |
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000 | 02973naa a2200385 4500 | |
001 | oai:DiVA.org:umu-87822 | |
003 | SwePub | |
008 | 140410s2014 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-878222 URI |
024 | 7 | a https://doi.org/10.1002/cssc.2013007732 DOI |
040 | a (SwePub)umu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Anugwom, Ikenna4 aut |
245 | 1 0 | a Switchable ionic liquids as delignification solvents for lignocellulosic materials |
264 | c 2014-03-11 | |
264 | 1 | b John Wiley & Sons,c 2014 |
338 | a print2 rdacarrier | |
520 | a The transformation of lignocellulosic materials into potentially valuable resources is compromised by their complicated structure. Consequently, new economical and feasible conversion/fractionation techniques that render value-added products are intensely investigated. Herein an unorthodox and feasible fractionation method of birch chips (B. pendula) using a switchable ionic liquid (SIL) derived from an alkanol amine (monoethanol amine, MEA) and an organic super base (1,8-diazabicyclo-[5.4.0]-undec-7-ene, DBU) with two different trigger acid gases (CO2 and SO2 ) is studied. After SIL treatment, the dissolved fractions were selectively separated by a step-wise method using an antisolvent to induce precipitation. The SIL was recycled after concentration and evaporation of anti-solvent. The composition of undissolved wood after MEA-SO2 -SIL treatment resulted in 80 wt % cellulose, 10 wt % hemicelluloses, and 3 wt % lignin, whereas MEA-CO2 -SIL treatment resulted in 66 wt % cellulose, 12 wt % hemicelluloses and 11 wt % lignin. Thus, the MEA-SO2 -SIL proved more efficient than the MEA-CO2 -SIL, and a better solvent for lignin removal. All fractions were analyzed by gas chromatography (GC), Fourier transform infrared spectroscopy (FT-IR), (13) C nuclear magnetic resonance spectroscopy (NMR) and Gel permeation chromatography (GPC). | |
650 | 7 | a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciences0 (SwePub)1042 hsv//eng |
653 | a alkanol amines; biomass; delignification; ionic liquids; organic superbases | |
700 | 1 | a Eta, Valerie4 aut |
700 | 1 | a Virtanen, Pasi4 aut |
700 | 1 | a Mäki-Arvela, Päivi4 aut |
700 | 1 | a Hedenström, Mattiasu Umeå universitet,Kemiska institutionen4 aut0 (Swepub:umu)mashem96 |
700 | 1 | a Hummel, Michael4 aut |
700 | 1 | a Sixta, Herbert4 aut |
700 | 1 | a Mikkola, Jyri-Pekkau Umeå universitet,Kemiska institutionen4 aut0 (Swepub:umu)jymi0001 |
710 | 2 | a Umeå universitetb Kemiska institutionen4 org |
773 | 0 | t ChemSusChemd : John Wiley & Sonsg 7:4, s. 1170-1176q 7:4<1170-1176x 1864-5631x 1864-564X |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-87822 |
856 | 4 8 | u https://doi.org/10.1002/cssc.201300773 |
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