Article (Scientific journals)
The activation of C–O bonds in lignin Miscanthus over acidic heterogeneous catalysts: towards lignin depolymerisation to monomer units
Samikannu, Ajaikumar; Mikkola, Jyri-Pekka; Tirsoaga, Alina et al.
2022In Biomass Conversion and Biorefinery
Peer reviewed
 

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Keywords :
Hydrogenolysis; Lignin Miscanthus; Methanol; Monomers; Synergistic effect; Acid catalyst; Condition; Heterogeneous catalyst; Lignin depolymerization; Lignin miscanthus; Miscanthus; Monomer units; Nb doped; One pot; Renewable Energy, Sustainability and the Environment
Abstract :
[en] One-pot depolymerisation of lignin, extracted from Miscanthus plants under acidic (formic acid lignin, FAL) or basic (ammonia lignin, AL) conditions, over Ni- and/or Nb-doped SBA-15, was the subject of this study. The aforementioned acid catalysts prepared by sol–gel method were characterized by SEM–EDX, ATR-FTIR, Raman, XRD, N2 adsorption/desorption isotherms, CO2-TPD and NH3-TPD techniques. The increase in acidity due to the insertion of Nb into the SBA-15 structure promoted the selective cleavage of β–O–4 from ammonia lignin, leading to aromatic monomer yields up to 22 wt% in 6 h at 180 °C under 50 atm H2. The catalytic performances of Ni-Nb-SBA-15 as well as its stability were influenced by the chemical composition of the lignin sample as results of its extraction from the Miscanthus plant.
Disciplines :
Chemistry
Author, co-author :
Samikannu, Ajaikumar;  Technical Chemistry, Department of Chemistry, Chemical Biological Centre, Umeå University, Umeå, Sweden
Mikkola, Jyri-Pekka;  Technical Chemistry, Department of Chemistry, Chemical Biological Centre, Umeå University, Umeå, Sweden ; Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Åbo-Turku, Finland
Tirsoaga, Alina;  Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bdul Regina Elisabeta, Bucharest, Romania
Tofan, Vlad;  Cantacuzino National Institute of R&D for Microbiology and Immunology, Bucharest, Romania
Fierascu, Radu Claudiu;  National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, Bucharest, Romania ; Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Bucharest, Romania
Richel, Aurore  ;  Université de Liège - ULiège > TERRA Research Centre > Smart Technologies for Food and Biobased Products (SMARTECH)
Verziu, Marian Nicolae ;  Department of Bioresources and Polymer Science, Advanced Polymer Materials Group, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, Bucharest, Romania
Language :
English
Title :
The activation of C–O bonds in lignin Miscanthus over acidic heterogeneous catalysts: towards lignin depolymerisation to monomer units
Publication date :
2022
Journal title :
Biomass Conversion and Biorefinery
ISSN :
2190-6815
eISSN :
2190-6823
Publisher :
Springer Science and Business Media Deutschland GmbH
Peer reviewed :
Peer reviewed
Available on ORBi :
since 13 October 2022

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