RT Journal Article
T1 Characterization of eucalyptus nitens lignins obtained by biorefinery methods based on ionic liquids
A1 Penin Sanchez, Lucía
A1 Lange, Heiko
A1 Santos Reyes, Valentín
A1 Crestini, Claudia
A1 Parajo Liñares, Juan Carlos
K1 3303.03 Procesos Químicos
K1 3303.01 Tecnología de la Catálisis
K1 3312.13 Tecnología de la Madera
AB Eucalyptus nitens wood samples were subjected to consecutive stages of hydrothermal processing for hemicellulose solubilization and delignification with an ionic liquid, i.e., either 1-butyl-3-methylimidazolium hydrogen sulfate or triethylammonium hydrogen sulfate. Delignification experiments were carried out a 170 °C for 10–50 min. The solid phases from treatments, i.e., cellulose-enriched solids, were recovered by centrifugation, and lignin was separated from the ionic liquid by water precipitation. The best delignification conditions were identified on the basis of the results determined for delignification percentage, lignin recovery yield, and cellulose recovery in solid phase. The lignins obtained under selected conditions were characterized in deep by 31P-NMR, 13C-NMR, HSQC, and gel permeation chromatography. The major structural features of the lignins were discussed in comparison with the results determined for a model Ionosolv lignin.
PB Molecules
SN 14203049
YR 2020
FD 2020-01-20
LK http://hdl.handle.net/11093/1690
UL http://hdl.handle.net/11093/1690
LA eng
NO Molecules, 25(2): 425 (2020)
NO Ministerio de Economía y Competitividad (España) | Ref. CTQ2017-82962-R
DS Investigo
RD 08-oct-2024