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 | American English |
|---|---|
| Pages (from-to) | 78-83 |
| Number of pages | 6 |
| Journal | Bioresource Technology |
| Volume | 161 |
| DOIs | |
| State | Published - Jun 2014 |
| Externally published | Yes |
ASJC Scopus subject areas
- 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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