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

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

Department of Chemistry

Yale University

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

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. © 2014.

Original language	English
Journal	Bioresource Technology
Volume	161
Pages (from-to)	78-83
ISSN	0960-8524
DOIs	https://doi.org/10.1016/j.biortech.2014.02.092
Publication status	Published - 2014

Keywords

Lignin
Catalysis
Porous metal oxides
Bio-oil
Supercritical solvents

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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. {\textcopyright} 2014.",

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

AU - Warner, Genoa

AU - Hansen, Thomas Søndergaard

AU - Riisager, Anders

AU - Beach, Evan S.

AU - Barta, Katalin

AU - Anastas, Paul T.

PY - 2014

Y1 - 2014

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. © 2014.

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. © 2014.

KW - Lignin

KW - Catalysis

KW - Porous metal oxides

KW - Bio-oil

KW - Supercritical solvents

U2 - 10.1016/j.biortech.2014.02.092

DO - 10.1016/j.biortech.2014.02.092

M3 - Journal article

C2 - 24686374

SN - 0960-8524

VL - 161

SP - 78

EP - 83

JO - Bioresource Technology

JF - Bioresource Technology

ER -

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

Abstract

Keywords

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