A new approach for bio-oil characterization based on gel permeation chromatography preparative fractionation

M. Castellvi Barnes, Jean Paul Lange, G. van Rossum, Sascha R.A. Kersten

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Abstract

Analyzes of bio-oils obtained by direct liquefaction are obstructed by the interferences of the liquefaction solvent. We therefore developed a new analytical approach based on a preparative gel permeation chromatography (GPC) fractionation to remove the solvent from the bio-oil and, if convenient, separate the resulting bio-oil into several fractions according to molecular size. The bio-oils investigated were prepared by liquefaction of pine wood using guaiacol and a guaiacol/water mixture as reaction media. These bio-oils were fractionated and then analyzed by several techniques such as 13C and 1H NMR, FTIR, C:H:O analysis and carbon residue. The results were compared with those of bio-oils produced via hydrothermal liquefaction (liquefaction in water) and fast pyrolysis. The analyzes showed great differences in product distribution, composition and properties of the bio-oil. For instance, the liquefaction oils appeared to be leaner in sugar-like components and richer in aromatic molecules than pyrolysis oil. Moreover, the aromatic content in the liquefaction oils indicated that carbohydrates react to form these type of compounds. In comparison with pyrolysis, liquefaction yielded bio-oils leaner in oxygen, but with higher content of heavies (compounds with apparent molecular weight > 1000 Da). The higher concentration of heavy products resulted in liquefaction oils with higher coking tendency than pyrolysis oil. A ranking of the severity of the reaction conditions for the liquefaction experiments is proposed: Guaiacol < Guaiacol/water < Water.
Original languageEnglish
Pages (from-to)444-453
Number of pages10
JournalJournal of analytical and applied pyrolysis
Volume113
DOIs
Publication statusPublished - 2015

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Gel permeation chromatography
Fractionation
Oils
Liquefaction
Guaiacol
Pyrolysis
Water
Coking
Carbohydrates
Sugars
Wood
Carbon
Molecular weight
Nuclear magnetic resonance

Keywords

  • IR-97367
  • METIS-311271

Cite this

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title = "A new approach for bio-oil characterization based on gel permeation chromatography preparative fractionation",
abstract = "Analyzes of bio-oils obtained by direct liquefaction are obstructed by the interferences of the liquefaction solvent. We therefore developed a new analytical approach based on a preparative gel permeation chromatography (GPC) fractionation to remove the solvent from the bio-oil and, if convenient, separate the resulting bio-oil into several fractions according to molecular size. The bio-oils investigated were prepared by liquefaction of pine wood using guaiacol and a guaiacol/water mixture as reaction media. These bio-oils were fractionated and then analyzed by several techniques such as 13C and 1H NMR, FTIR, C:H:O analysis and carbon residue. The results were compared with those of bio-oils produced via hydrothermal liquefaction (liquefaction in water) and fast pyrolysis. The analyzes showed great differences in product distribution, composition and properties of the bio-oil. For instance, the liquefaction oils appeared to be leaner in sugar-like components and richer in aromatic molecules than pyrolysis oil. Moreover, the aromatic content in the liquefaction oils indicated that carbohydrates react to form these type of compounds. In comparison with pyrolysis, liquefaction yielded bio-oils leaner in oxygen, but with higher content of heavies (compounds with apparent molecular weight > 1000 Da). The higher concentration of heavy products resulted in liquefaction oils with higher coking tendency than pyrolysis oil. A ranking of the severity of the reaction conditions for the liquefaction experiments is proposed: Guaiacol < Guaiacol/water < Water.",
keywords = "IR-97367, METIS-311271",
author = "{Castellvi Barnes}, M. and Lange, {Jean Paul} and {van Rossum}, G. and Kersten, {Sascha R.A.}",
year = "2015",
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language = "English",
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pages = "444--453",
journal = "Journal of analytical and applied pyrolysis",
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A new approach for bio-oil characterization based on gel permeation chromatography preparative fractionation. / Castellvi Barnes, M.; Lange, Jean Paul; van Rossum, G.; Kersten, Sascha R.A.

In: Journal of analytical and applied pyrolysis, Vol. 113, 2015, p. 444-453.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - A new approach for bio-oil characterization based on gel permeation chromatography preparative fractionation

AU - Castellvi Barnes, M.

AU - Lange, Jean Paul

AU - van Rossum, G.

AU - Kersten, Sascha R.A.

PY - 2015

Y1 - 2015

N2 - Analyzes of bio-oils obtained by direct liquefaction are obstructed by the interferences of the liquefaction solvent. We therefore developed a new analytical approach based on a preparative gel permeation chromatography (GPC) fractionation to remove the solvent from the bio-oil and, if convenient, separate the resulting bio-oil into several fractions according to molecular size. The bio-oils investigated were prepared by liquefaction of pine wood using guaiacol and a guaiacol/water mixture as reaction media. These bio-oils were fractionated and then analyzed by several techniques such as 13C and 1H NMR, FTIR, C:H:O analysis and carbon residue. The results were compared with those of bio-oils produced via hydrothermal liquefaction (liquefaction in water) and fast pyrolysis. The analyzes showed great differences in product distribution, composition and properties of the bio-oil. For instance, the liquefaction oils appeared to be leaner in sugar-like components and richer in aromatic molecules than pyrolysis oil. Moreover, the aromatic content in the liquefaction oils indicated that carbohydrates react to form these type of compounds. In comparison with pyrolysis, liquefaction yielded bio-oils leaner in oxygen, but with higher content of heavies (compounds with apparent molecular weight > 1000 Da). The higher concentration of heavy products resulted in liquefaction oils with higher coking tendency than pyrolysis oil. A ranking of the severity of the reaction conditions for the liquefaction experiments is proposed: Guaiacol < Guaiacol/water < Water.

AB - Analyzes of bio-oils obtained by direct liquefaction are obstructed by the interferences of the liquefaction solvent. We therefore developed a new analytical approach based on a preparative gel permeation chromatography (GPC) fractionation to remove the solvent from the bio-oil and, if convenient, separate the resulting bio-oil into several fractions according to molecular size. The bio-oils investigated were prepared by liquefaction of pine wood using guaiacol and a guaiacol/water mixture as reaction media. These bio-oils were fractionated and then analyzed by several techniques such as 13C and 1H NMR, FTIR, C:H:O analysis and carbon residue. The results were compared with those of bio-oils produced via hydrothermal liquefaction (liquefaction in water) and fast pyrolysis. The analyzes showed great differences in product distribution, composition and properties of the bio-oil. For instance, the liquefaction oils appeared to be leaner in sugar-like components and richer in aromatic molecules than pyrolysis oil. Moreover, the aromatic content in the liquefaction oils indicated that carbohydrates react to form these type of compounds. In comparison with pyrolysis, liquefaction yielded bio-oils leaner in oxygen, but with higher content of heavies (compounds with apparent molecular weight > 1000 Da). The higher concentration of heavy products resulted in liquefaction oils with higher coking tendency than pyrolysis oil. A ranking of the severity of the reaction conditions for the liquefaction experiments is proposed: Guaiacol < Guaiacol/water < Water.

KW - IR-97367

KW - METIS-311271

U2 - 10.1016/j.jaap.2015.03.005

DO - 10.1016/j.jaap.2015.03.005

M3 - Article

VL - 113

SP - 444

EP - 453

JO - Journal of analytical and applied pyrolysis

JF - Journal of analytical and applied pyrolysis

SN - 0165-2370

ER -