Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

Anna Trubetskaya; Avery  Brown; Geoffrey  Tompsett; Michael  T. Timko; Jens Kling; Markus  Broström; Mogens Larsen Andersen; Kentaro  Umeki

doi:10.1016/j.apenergy.2017.12.068

Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

Anna Trubetskaya^*, Avery Brown, Geoffrey Tompsett, Michael T. Timko, Jens Kling, Markus Broström, Mogens Larsen Andersen, Kentaro Umeki

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

This study presents the effect of lignocellulosic compounds and monolignols on the yield, nanostructure and reactivity of soot generated at 1250 °C in a drop tube furnace. The structure of soot was characterized by electron microscopy techniques, Raman spectroscopy and electron spin resonance spectroscopy. The CO₂ reactivity of soot was investigated by thermogravimetric analysis. Soot from cellulose was more reactive than soot produced from extractives, lignin and monolignols. Soot reactivity was correlated with the separation distances between adjacent graphene layers, as measured using transmission electron microscopy. Particle size, free radical concentration, differences in a degree of curvature and multi-core structures influenced the soot reactivity less than the interlayer separation distances. Soot yield was correlated with the lignin content of the feedstock. The selection of the extraction solvent had a strong influence on the soot reactivity. The Soxhlet extraction of softwood and wheat straw lignin soot using methanol decreased the soot reactivity, whereas acetone extraction
had only a modest effect.

Original language	English
Journal	Applied Energy
Volume	212
Pages (from-to)	1489-1500
ISSN	0306-2619
DOIs	https://doi.org/10.1016/j.apenergy.2017.12.068
Publication status	Published - 2018

Keywords

Fast pyrolysis
Lignocellulosic compounds and monolignols
Soot
Reactivity
Nanostructure

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10.1016/j.apenergy.2017.12.068

Article4 revised 002 Accepted author manuscript, 2.07 MBLicence: CC BY-NC-ND

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title = "Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols",

abstract = "This study presents the effect of lignocellulosic compounds and monolignols on the yield, nanostructure and reactivity of soot generated at 1250 °C in a drop tube furnace. The structure of soot was characterized by electron microscopy techniques, Raman spectroscopy and electron spin resonance spectroscopy. The CO2 reactivity of soot was investigated by thermogravimetric analysis. Soot from cellulose was more reactive than soot produced from extractives, lignin and monolignols. Soot reactivity was correlated with the separation distances between adjacent graphene layers, as measured using transmission electron microscopy. Particle size, free radical concentration, differences in a degree of curvature and multi-core structures influenced the soot reactivity less than the interlayer separation distances. Soot yield was correlated with the lignin content of the feedstock. The selection of the extraction solvent had a strong influence on the soot reactivity. The Soxhlet extraction of softwood and wheat straw lignin soot using methanol decreased the soot reactivity, whereas acetone extractionhad only a modest effect.",

keywords = "Fast pyrolysis, Lignocellulosic compounds and monolignols, Soot, Reactivity, Nanostructure",

author = "Anna Trubetskaya and Avery Brown and Geoffrey Tompsett and {T. Timko}, Michael and Jens Kling and Markus Brostr{\"o}m and Andersen, {Mogens Larsen} and Kentaro Umeki",

year = "2018",

doi = "10.1016/j.apenergy.2017.12.068",

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T1 - Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

AU - Trubetskaya, Anna

AU - Brown, Avery

AU - Tompsett, Geoffrey

AU - T. Timko, Michael

AU - Kling, Jens

AU - Broström, Markus

AU - Andersen, Mogens Larsen

AU - Umeki, Kentaro

PY - 2018

Y1 - 2018

N2 - This study presents the effect of lignocellulosic compounds and monolignols on the yield, nanostructure and reactivity of soot generated at 1250 °C in a drop tube furnace. The structure of soot was characterized by electron microscopy techniques, Raman spectroscopy and electron spin resonance spectroscopy. The CO2 reactivity of soot was investigated by thermogravimetric analysis. Soot from cellulose was more reactive than soot produced from extractives, lignin and monolignols. Soot reactivity was correlated with the separation distances between adjacent graphene layers, as measured using transmission electron microscopy. Particle size, free radical concentration, differences in a degree of curvature and multi-core structures influenced the soot reactivity less than the interlayer separation distances. Soot yield was correlated with the lignin content of the feedstock. The selection of the extraction solvent had a strong influence on the soot reactivity. The Soxhlet extraction of softwood and wheat straw lignin soot using methanol decreased the soot reactivity, whereas acetone extractionhad only a modest effect.

AB - This study presents the effect of lignocellulosic compounds and monolignols on the yield, nanostructure and reactivity of soot generated at 1250 °C in a drop tube furnace. The structure of soot was characterized by electron microscopy techniques, Raman spectroscopy and electron spin resonance spectroscopy. The CO2 reactivity of soot was investigated by thermogravimetric analysis. Soot from cellulose was more reactive than soot produced from extractives, lignin and monolignols. Soot reactivity was correlated with the separation distances between adjacent graphene layers, as measured using transmission electron microscopy. Particle size, free radical concentration, differences in a degree of curvature and multi-core structures influenced the soot reactivity less than the interlayer separation distances. Soot yield was correlated with the lignin content of the feedstock. The selection of the extraction solvent had a strong influence on the soot reactivity. The Soxhlet extraction of softwood and wheat straw lignin soot using methanol decreased the soot reactivity, whereas acetone extractionhad only a modest effect.

KW - Fast pyrolysis

KW - Lignocellulosic compounds and monolignols

KW - Soot

KW - Reactivity

KW - Nanostructure

U2 - 10.1016/j.apenergy.2017.12.068

DO - 10.1016/j.apenergy.2017.12.068

M3 - Journal article

SN - 0306-2619

VL - 212

SP - 1489

EP - 1500

JO - Applied Energy

JF - Applied Energy

ER -

Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

Abstract

Keywords

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