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The activation of C–O bonds in lignin Miscanthus over acidic heterogeneous catalysts: towards lignin depolymerisation to monomer units
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen. Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Åbo-Turku, Finland.
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2024 (Engelska)Ingår i: Biomass Conversion and Biorefinery, ISSN 2190-6815, E-ISSN 2190-6823, Vol. 14, nr 8, s. 9723-9737Artikel i tidskrift (Refereegranskat) Published
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.

Ort, förlag, år, upplaga, sidor
Springer, 2024. Vol. 14, nr 8, s. 9723-9737
Nyckelord [en]
Lignin Miscanthus, Hydrogenolysis, Monomers, Methanol, Synergistic efect
Nationell ämneskategori
Kemi
Identifikatorer
URN: urn:nbn:se:umu:diva-198249DOI: 10.1007/s13399-022-03061-4ISI: 000828950800001Scopus ID: 2-s2.0-85134654307OAI: oai:DiVA.org:umu-198249DiVA, id: diva2:1684317
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Bio4EnergyKnut och Alice Wallenbergs StiftelseKempestiftelsernaTillgänglig från: 2022-07-24 Skapad: 2022-07-24 Senast uppdaterad: 2024-05-10Bibliografiskt granskad

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Samikannu, AjaikumarMikkola, Jyri-Pekka

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