RT info:eu-repo/semantics/article
T1 Base-catalysed depolymerization of lignins in supercritical water: Influence of lignin nature and valorisation of pulping and biorefinery by-products
A1 Pérez Velilla, Eduardo
A1 Abad Fernández, Nerea
A1 Lourençon, Tainise
A1 Balakshin, Mikhail
A1 Sixta, Herbert
A1 Cocero Alonso, María José
K1 Lignin
K1 Lignina
K1 Supercritical water
K1 Agua supercrítica
K1 Depolymerization
K1 Despolimerización
K1 Hydrothermal reactions
K1 Reacciones hidrotermales
AB Different lignins from different sources (hardwoods, softwoods and crop residues) and obtained as by-products of different processes such pulping or biorefining were depolymerized in alkaline supercritical water (SCW: 386 °C and 260 bar) in an intensified continuous process to produce high value-added compounds with low-molecular-weight in only 300 ms of reaction time. The products obtained were analysed to determine the yield, selectivity to monomers, chemical structure and molecular weight distribution.The char formation was low in most cases, but the proportion of heavy and light oils were variable upon the starting material used. The monoaromatics yield depends mostly on the type of lignin utilized being the non-wood biorefinery lignins less suitable for monomers production than the technical wood ones (13-8%). The monomer distribution depends on the biomass of origin and the pulping method. This technology is equally effective when directly treating a black liquor and better results are obtained if compared to the corresponding isolated lignin.
PB Elsevier
SN 0961-9534
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/54128
UL https://uvadoc.uva.es/handle/10324/54128
LA eng
NO Biomass and Bioenergy, 2022, vol. 163, 106536
NO Producción Científica
DS UVaDOC
RD 05-nov-2024