Switchable ionic liquids as delignification solvents for lignocellulosic materials

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Fältnamn	Indikatorer	Metadata
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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Av författaren/redakt...: Anugwom, Ikenna; Eta, Valerie; Virtanen, Pasi; Mäki-Arvela, Päi ...; Hedenström, Matt ...; Hummel, Michael; visa fler...; Sixta, Herbert; Mikkola, Jyri-Pe ...; visa färre...

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