Depolymerization of organosolv lignin using doped porous metal oxides in supercritical methanol

Genoa Warner; Thomas S. Hansen; Anders Riisager; Evan S. Beach; Katalin Barta; Paul T. Anastas

doi:10.1016/j.biortech.2014.02.092

Depolymerization of organosolv lignin using doped porous metal oxides in supercritical methanol

Genoa Warner, Thomas S. Hansen, Anders Riisager, Evan S. Beach, Katalin Barta, Paul T. Anastas

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

92 Scopus citations

Abstract

An isolated, solvent-extracted lignin from candlenut (Aleurites moluccana) biomass was subjected to catalytic depolymerization in the presence of supercritical methanol, using a range of porous metal oxides derived from hydrotalcite-like precursors. The most effective catalysts in terms of lignin conversion to methanol-soluble products, without char formation, were based on copper in combination with other dopants based on relatively earth-abundant metals. Nearly complete conversion of lignin to bio-oil composed of monomers and low-mass oligomers with high aromatic content was obtained in 6. h at 310. °C using a catalyst based on a Cu- and La-doped hydrotalcite-like precursor. Product mixtures were characterized by NMR spectroscopy, gel permeation chromatography, and GC-MS.

Original language	English (US)
Pages (from-to)	78-83
Number of pages	6
Journal	Bioresource Technology
Volume	161
DOIs	https://doi.org/10.1016/j.biortech.2014.02.092
State	Published - Jun 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

Keywords

Bio-oil
Catalysis
Lignin
Porous metal oxides
Supercritical solvents

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10.1016/j.biortech.2014.02.092

Cite this

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title = "Depolymerization of organosolv lignin using doped porous metal oxides in supercritical methanol",

abstract = "An isolated, solvent-extracted lignin from candlenut (Aleurites moluccana) biomass was subjected to catalytic depolymerization in the presence of supercritical methanol, using a range of porous metal oxides derived from hydrotalcite-like precursors. The most effective catalysts in terms of lignin conversion to methanol-soluble products, without char formation, were based on copper in combination with other dopants based on relatively earth-abundant metals. Nearly complete conversion of lignin to bio-oil composed of monomers and low-mass oligomers with high aromatic content was obtained in 6. h at 310. °C using a catalyst based on a Cu- and La-doped hydrotalcite-like precursor. Product mixtures were characterized by NMR spectroscopy, gel permeation chromatography, and GC-MS.",

keywords = "Bio-oil, Catalysis, Lignin, Porous metal oxides, Supercritical solvents",

author = "Genoa Warner and Hansen, {Thomas S.} and Anders Riisager and Beach, {Evan S.} and Katalin Barta and Anastas, {Paul T.}",

year = "2014",

month = jun,

doi = "10.1016/j.biortech.2014.02.092",

language = "English (US)",

volume = "161",

pages = "78--83",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Depolymerization of organosolv lignin using doped porous metal oxides in supercritical methanol

AU - Warner, Genoa

AU - Hansen, Thomas S.

AU - Riisager, Anders

AU - Beach, Evan S.

AU - Barta, Katalin

AU - Anastas, Paul T.

PY - 2014/6

Y1 - 2014/6

N2 - An isolated, solvent-extracted lignin from candlenut (Aleurites moluccana) biomass was subjected to catalytic depolymerization in the presence of supercritical methanol, using a range of porous metal oxides derived from hydrotalcite-like precursors. The most effective catalysts in terms of lignin conversion to methanol-soluble products, without char formation, were based on copper in combination with other dopants based on relatively earth-abundant metals. Nearly complete conversion of lignin to bio-oil composed of monomers and low-mass oligomers with high aromatic content was obtained in 6. h at 310. °C using a catalyst based on a Cu- and La-doped hydrotalcite-like precursor. Product mixtures were characterized by NMR spectroscopy, gel permeation chromatography, and GC-MS.

AB - An isolated, solvent-extracted lignin from candlenut (Aleurites moluccana) biomass was subjected to catalytic depolymerization in the presence of supercritical methanol, using a range of porous metal oxides derived from hydrotalcite-like precursors. The most effective catalysts in terms of lignin conversion to methanol-soluble products, without char formation, were based on copper in combination with other dopants based on relatively earth-abundant metals. Nearly complete conversion of lignin to bio-oil composed of monomers and low-mass oligomers with high aromatic content was obtained in 6. h at 310. °C using a catalyst based on a Cu- and La-doped hydrotalcite-like precursor. Product mixtures were characterized by NMR spectroscopy, gel permeation chromatography, and GC-MS.

KW - Bio-oil

KW - Catalysis

KW - Lignin

KW - Porous metal oxides

KW - Supercritical solvents

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SN - 0960-8524

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SP - 78

EP - 83

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Depolymerization of organosolv lignin using doped porous metal oxides in supercritical methanol

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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