Articles producció científica> Enginyeria Química

Toward a facile depolymerization of alkaline lignin into high-value platform chemicals via the synergetic combination of mechanocatalysis with photocatalysis or Fenton process

  • Dades identificatives

    Identificador: imarina:9287731
    Autors:
    Aboagye, DominicMedina, FrancescContreras, Sandra
    Resum:
    Even though lignin is very rich in aromatic compounds, it remains the least exploited fraction of biomass due to its recalcitrant nature. Consequently, prevailing efforts to fully unlock its potential are still far from reaching due to the use of harsh conditions and energy-intensive processes which are not environmentally friendly. Herein, a facile approach for coupling acid-catalyzed mechanocatalysis (MC) via ball milling with TiO2 photocatalysis (PC)/Fenton for depolymerization of alkaline lignin was investigated. Mechanocatalysis (MC) involved prior acid impregnation (AI) followed by ball milling. A direct comparison of pretreatments (AI, BM, MC) coupled with oxidation processes was preliminarily undertaken. The untreated lignin (UL) served as the control. MC/PC showed the highest yield of major aromatic products. Vanillin, homovanillic acid, acetovanillone, guaiacol, and vanillic acid were major aromatic building blocks identified and quantified. Further optimization revealed a total monomer yield of 22.77 wt%. SEM and FTIR analysis were done with the latter revealing the existence of pre-oxidation reaction in the BM and MC lignin prior to PC. The proposed synergetic process could offer an advantage over prevailing robust systems used for lignin depolymerization.
  • Altres:

    Autor segons l'article: Aboagye, Dominic; Medina, Francesc; Contreras, Sandra
    Departament: Enginyeria Química
    Autor/s de la URV: Aboagye, Dominic / Contreras Iglesias, Sandra / Medina Cabello, Francisco
    Paraules clau: Photocatalysis Mechanocatalysis Lignin depolymerization High-value chemicals Fenton Catalytic depolymerization water-treatment tio2 photocatalysis oxidation mechanocatalysis high-value chemicals fenton degradation conversion cleavage aromatics acids
    Resum: Even though lignin is very rich in aromatic compounds, it remains the least exploited fraction of biomass due to its recalcitrant nature. Consequently, prevailing efforts to fully unlock its potential are still far from reaching due to the use of harsh conditions and energy-intensive processes which are not environmentally friendly. Herein, a facile approach for coupling acid-catalyzed mechanocatalysis (MC) via ball milling with TiO2 photocatalysis (PC)/Fenton for depolymerization of alkaline lignin was investigated. Mechanocatalysis (MC) involved prior acid impregnation (AI) followed by ball milling. A direct comparison of pretreatments (AI, BM, MC) coupled with oxidation processes was preliminarily undertaken. The untreated lignin (UL) served as the control. MC/PC showed the highest yield of major aromatic products. Vanillin, homovanillic acid, acetovanillone, guaiacol, and vanillic acid were major aromatic building blocks identified and quantified. Further optimization revealed a total monomer yield of 22.77 wt%. SEM and FTIR analysis were done with the latter revealing the existence of pre-oxidation reaction in the BM and MC lignin prior to PC. The proposed synergetic process could offer an advantage over prevailing robust systems used for lignin depolymerization.
    Àrees temàtiques: Química Materiais Interdisciplinar Geociências General chemistry Engineering, chemical Engenharias iii Engenharias ii Engenharias i Ciências biológicas ii Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry, physical Chemistry, applied Chemistry (miscellaneous) Chemistry (all) Catalysis Biotecnología Biodiversidade Astronomia / física Arquitetura, urbanismo e design
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: dominic.aboagye@estudiants.urv.cat dominic.aboagye@estudiants.urv.cat sandra.contreras@urv.cat francesc.medina@urv.cat
    Identificador de l'autor: 0000-0001-8917-4733 0000-0002-3111-1542
    Data d'alta del registre: 2024-10-12
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/pii/S0920586122004643
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Catalysis Today. 413 113969-
    Referència de l'ítem segons les normes APA: Aboagye, Dominic; Medina, Francesc; Contreras, Sandra (2023). Toward a facile depolymerization of alkaline lignin into high-value platform chemicals via the synergetic combination of mechanocatalysis with photocatalysis or Fenton process. Catalysis Today, 413(), 113969-. DOI: 10.1016/j.cattod.2022.11.030
    DOI de l'article: 10.1016/j.cattod.2022.11.030
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2023
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Catalysis,Chemistry (Miscellaneous),Chemistry, Applied,Chemistry, Physical,Engineering, Chemical
    Photocatalysis
    Mechanocatalysis
    Lignin depolymerization
    High-value chemicals
    Fenton
    Catalytic depolymerization
    water-treatment
    tio2
    photocatalysis
    oxidation
    mechanocatalysis
    high-value chemicals
    fenton
    degradation
    conversion
    cleavage
    aromatics
    acids
    Química
    Materiais
    Interdisciplinar
    Geociências
    General chemistry
    Engineering, chemical
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências biológicas ii
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Chemistry, physical
    Chemistry, applied
    Chemistry (miscellaneous)
    Chemistry (all)
    Catalysis
    Biotecnología
    Biodiversidade
    Astronomia / física
    Arquitetura, urbanismo e design
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