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Understanding the formation of phenolic monomers during fractionation of birch wood under supercritical ethanol over iron based catalysts
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2020 (Engelska)Ingår i: Journal of the Energy Institute, ISSN 1743-9671, E-ISSN 1746-0220, Vol. 93, nr 5, s. 2055-2062Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The liquefaction of biomass in ethanol, at the critical point, has high potential due to low temperature and pressure (243 °C, 63 bar) when compared with water (374 °C, 220 bar). The current study deals with the fractionation of birch wood powder which was liquefied under supercritical ethanol over acidic or non-acidic catalysts, 5 wt % Fe-Beta-H-150 and 5 wt % Fe–SiO2, respectively. Based on the results, the reaction mechanism for the formation of lignin degradation products was proposed. The main phenolic product was isoeugenol over 5 wt % Fe-Beta-H-150 while intermediate products, i.e. such as coniferyl, and sinapyl alcohol, 4-propenyl syringol, syringaresinol, as well as syringyldehyde reacted rapidly further. The thermodynamic analysis was performed by Joback approach and using Gibbs-Helmholtz equation supporting the obtained results.

Ort, förlag, år, upplaga, sidor
Elsevier, 2020. Vol. 93, nr 5, s. 2055-2062
Nyckelord [en]
Hydrothermal liquefaction (HTL), Birch, Supercritical ethanol, Hydrogen atmosphere, Iron supported zeolite, Isoeugenol, Thermodynamic analysis
Nationell ämneskategori
Kemiska processer Annan kemiteknik Organisk kemi Polymerteknologi Bioenergi
Identifikatorer
URN: urn:nbn:se:umu:diva-171102DOI: 10.1016/j.joei.2020.05.001ISI: 000564609700004Scopus ID: 2-s2.0-85086151423OAI: oai:DiVA.org:umu-171102DiVA, id: diva2:1432249
Projekt
Bio4Energy
Forskningsfinansiär
Bio4EnergyTillgänglig från: 2020-05-26 Skapad: 2020-05-26 Senast uppdaterad: 2023-11-14Bibliografiskt granskad

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Samikannu, AjaikumarMikkola, Jyri-Pekka

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Samikannu, AjaikumarMikkola, Jyri-Pekka
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Journal of the Energy Institute
Kemiska processerAnnan kemiteknikOrganisk kemiPolymerteknologiBioenergi

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Totalt: 258 träffar
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