Production of aromatic compounds by catalytic depolymerization of technical and downstream biorefinery lignins
| dc.contributor.author | Cornejo Ibergallartu, Alfonso | |
| dc.contributor.author | Bimbela Serrano, Fernando | |
| dc.contributor.author | Moreira, Rui | |
| dc.contributor.author | Hablich Alvarracin, Karina Lissett | |
| dc.contributor.author | García Yoldi, Íñigo | |
| dc.contributor.author | Maisterra Udi, Maitane | |
| dc.contributor.author | Portugal, Antonio | |
| dc.contributor.author | Gandía Pascual, Luis | |
| dc.contributor.author | Martínez Merino, Víctor | |
| dc.contributor.department | Zientziak | eu |
| dc.contributor.department | Institute for Advanced Materials and Mathematics - INAMAT2 | en |
| dc.contributor.department | Ciencias | es_ES |
| dc.contributor.funder | Gobierno de Navarra / Nafarroako Gobernua, PC036-037 Biovalorización | es |
| dc.contributor.funder | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa | es |
| dc.date.accessioned | 2021-01-20T09:41:11Z | |
| dc.date.available | 2021-01-20T09:41:11Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | Lignocellulosic materials are promising alternatives to non-renewable fossil sources when producing aromatic compounds. Lignins from Populus salicaceae., Pinus radiata and Pinus pinaster from industrial wastes and biorefinery effluents were isolated and characterized. Lignin was depolymerized using homogenous (NaOH) and heterogeneous (Ni-, Cu-or Ni-Cu-hydrotalcites) base catalysis and catalytic hydrogenolysis using Ru/C. When homogeneous base catalyzed depolymerization (BCD) and Ru/C hydrogenolysis were combined on poplar lignin, the aromatics amount was ca. 11 wt.%. Monomer distributions changed depending on the feedstock and the reaction conditions. Aqueous NaOH produced cleavage of the alkyl side chain that was preserved when using modified hydrotalcite catalysts or Ru/C-catalyzed hydrogenolysis in ethanol. Depolymerization using hydrotalcite catalysts in ethanol produced monomers bearing carbonyl groups on the alkyl side chain. The analysis of the reaction mixtures was done by size exclusion chromatography (SEC) and diffusion ordered nuclear magnetic resonance spectroscopy (DOSY NMR).31P NMR and heteronuclear single quantum coherence spectroscopy (HSQC) were also used in this study. The content in poly-(hydroxy)-aromatic ethers in the reaction mixtures decreased upon thermal treatments in ethanol. It was concluded that thermo-solvolysis is key in lignin depolymerization, and that the synergistic effect of Ni and Cu provided monomers with oxidized alkyl side chains. | en |
| dc.description.sponsorship | This research was funded by the following institutions: UNED-Fundación La Caixa (Prj. Ref. 'LCF/PR/PR15/51100007'), Economy Development Departament, Navarre Government (under Project 'PC036-037 Biovalorización') the Portuguese Foundation for Science and Technology (FCT) and the European Development Regional Fund (ERDF) under the scope of the MultiBiorefinery project (POCI-01-0145-FEDER-016403), and by Banco de Santander and Universidad Pública de Navarra under the 'Programa de Intensificación de la Investigación 2018' initiative. Mr. Rui Moreira was granted funding under the Erasmus+ Programme of the European Union to conduct a 3-month research sojourn at UPNA laboratories (mobility aid ref. OUT_2018_1700). | en |
| dc.description.sponsorship | This research was funded by the following institutions: UNED-Fundación La Caixa (Prj. Ref. “LCF/PR/PR15/51100007”), Economy Development Departament, Navarre Government (under Project “PC036-037 Biovalorización”) the Portuguese Foundation for Science and Technology (FCT) and the European Development Regional Fund (ERDF) under the scope of the MultiBiorefinery project (POCI-01-0145-FEDER-016403), and by Banco de Santander and Universidad Pública de Navarra under the “Programa de Intensificación de la Investigación 2018” initiative. Mr. Rui Moreira was granted funding under the Erasmus+ Programme of the European Union to conduct a 3-month research sojourn at UPNA laboratories (mobility aid ref. OUT_2018_1700). | en |
| dc.format.extent | 30 p. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.3390/biom10091338 | |
| dc.identifier.issn | 2218-273X (Electronic) | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/39021 | |
| dc.language.iso | eng | en |
| dc.publisher | MDPI | en |
| dc.relation.ispartof | Biomolecules, 2020, 10(9), 1338 | en |
| dc.relation.publisherversion | https://doi.org/10.3390/biom10091338 | |
| dc.rights | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Lignin | en |
| dc.subject | Depolymerization | en |
| dc.subject | Homogeneous and heterogeneous catalysis | en |
| dc.subject | Bio-based aromatic compounds | en |
| dc.title | Production of aromatic compounds by catalytic depolymerization of technical and downstream biorefinery lignins | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
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