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

doi:10.1021/la051990a

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

BA3603 Thermochemical conversions

Research output: Contribution to journal › Article › Scientific › peer-review

78 Citations (Scopus)

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 language	English
Pages (from-to)	306 - 312
Journal	Langmuir
Volume	22
Issue number	1
DOIs	https://doi.org/10.1021/la051990a
Publication status	Published - 2006
MoE publication type	A1 Journal article-refereed

Keywords

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

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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10.1021/la051990a

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title = "SANS Analysis of the Microstructural Evolution during the Aging of Pyrolysis Oils from Biomass",

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.",

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author = "Emiliano Fratini and Massimo Bonini and Anja Oasmaa and Yrj{\"o} Solantausta and Jose Teixeira and Piero Baglioni",

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doi = "10.1021/la051990a",

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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

PY - 2006

Y1 - 2006

N2 - 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.

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.

KW - biofuels

KW - liquid biofuels

KW - biomass

KW - aging

KW - lignin

KW - pyrolysis

KW - fast pyrolysis

KW - forest residues

KW - wood residues

KW - greenhouse gas emissions

KW - greenhouse gases

KW - climate change

KW - SANS

U2 - 10.1021/la051990a

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