SANS Analysis of the Microstructural Evolution during the Aging of Pyrolysis Oils from Biomass

Emiliano Fratini, Massimo Bonini, Anja Oasmaa, Yrjö Solantausta, Jose Teixeira, Piero Baglioni

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

In this paper, we report for the first time a microstructural characterization of pyrolysis oils obtained from biomass. Bio crude oils (BCOs) are good candidates as substitutes for mineral oils as fuels. By using small-angle neutron scattering (SANS), we show that BCOs are nanostructured fluids constituted by a complex continuous phase and nanoparticles mainly formed by the association of units of pyrolytic lignins. The aggregation of these units during the time produces branched structures with fractal dimension Df between 1.4 and 1.5, which are responsible for BCO aging. SANS results fully support the recently formulated thermal ejection theory, accounting for the mechanism of formation of the lignin fraction in oils obtained from fast pyrolysis of biomass.
Original languageEnglish
Pages (from-to)306 - 312
JournalLangmuir
Volume22
Issue number1
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Microstructural evolution
Petroleum
biomass
Neutron scattering
crude oil
pyrolysis
Oils
Biomass
neutron scattering
lignin
Pyrolysis
Crude oil
Lignin
Aging of materials
oils
mineral oils
Mineral Oil
Mineral oils
Fractal dimension
ejection

Keywords

  • biofuels
  • liquid biofuels
  • biomass
  • aging
  • lignin
  • pyrolysis
  • fast pyrolysis
  • forest residues
  • wood residues
  • greenhouse gas emissions
  • greenhouse gases
  • climate change
  • SANS

Cite this

Fratini, E., Bonini, M., Oasmaa, A., Solantausta, Y., Teixeira, J., & Baglioni, P. (2006). SANS Analysis of the Microstructural Evolution during the Aging of Pyrolysis Oils from Biomass. Langmuir, 22(1), 306 - 312. https://doi.org/10.1021/la051990a
Fratini, Emiliano ; Bonini, Massimo ; Oasmaa, Anja ; Solantausta, Yrjö ; Teixeira, Jose ; Baglioni, Piero. / SANS Analysis of the Microstructural Evolution during the Aging of Pyrolysis Oils from Biomass. In: Langmuir. 2006 ; Vol. 22, No. 1. pp. 306 - 312.
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Fratini, E, Bonini, M, Oasmaa, A, Solantausta, Y, Teixeira, J & Baglioni, P 2006, 'SANS Analysis of the Microstructural Evolution during the Aging of Pyrolysis Oils from Biomass', Langmuir, vol. 22, no. 1, pp. 306 - 312. https://doi.org/10.1021/la051990a

SANS Analysis of the Microstructural Evolution during the Aging of Pyrolysis Oils from Biomass. / Fratini, Emiliano; Bonini, Massimo; Oasmaa, Anja; Solantausta, Yrjö; Teixeira, Jose; Baglioni, Piero.

In: Langmuir, Vol. 22, No. 1, 2006, p. 306 - 312.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - SANS Analysis of the Microstructural Evolution during the Aging of Pyrolysis Oils from Biomass

AU - Fratini, Emiliano

AU - Bonini, Massimo

AU - Oasmaa, Anja

AU - Solantausta, Yrjö

AU - Teixeira, Jose

AU - Baglioni, Piero

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AB - In this paper, we report for the first time a microstructural characterization of pyrolysis oils obtained from biomass. Bio crude oils (BCOs) are good candidates as substitutes for mineral oils as fuels. By using small-angle neutron scattering (SANS), we show that BCOs are nanostructured fluids constituted by a complex continuous phase and nanoparticles mainly formed by the association of units of pyrolytic lignins. The aggregation of these units during the time produces branched structures with fractal dimension Df between 1.4 and 1.5, which are responsible for BCO aging. SANS results fully support the recently formulated thermal ejection theory, accounting for the mechanism of formation of the lignin fraction in oils obtained from fast pyrolysis of biomass.

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KW - liquid biofuels

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KW - lignin

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KW - forest residues

KW - wood residues

KW - greenhouse gas emissions

KW - greenhouse gases

KW - climate change

KW - SANS

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