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

  • Identification data

    Identifier: imarina:9287731
  • Authors:

    Aboagye, D
    Medina, F
    Contreras, S
    Catalysis Today
    10.1016/j.cattod.2022.11.030
    Catalysis Today. 413
  • Others:

    Author, as appears in the article.: Aboagye, D; Medina, F; Contreras, S
    Department: Enginyeria Química
    URV's Author/s: ABOAGYE, DOMINIC / Contreras Iglesias, Sandra / Medina Cabello, Francisco
    Keywords: 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
    Abstract: 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.
    Thematic Areas: 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
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: dominic.aboagye@urv.cat sandra.contreras@urv.cat francesc.medina@urv.cat
    Author identifier: 0000-0001-8917-4733 0000-0002-3111-1542
    Record's date: 2024-07-20
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S0920586122004643
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Catalysis Today. 413
    APA: Aboagye, D; Medina, F; Contreras, S (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(), -. DOI: 10.1016/j.cattod.2022.11.030
    Article's DOI: 10.1016/j.cattod.2022.11.030
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    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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