Depolymerization of organosolv lignin using doped porous metal oxides in supercritical methanolWarner, G., Hansen, T. S., Riisager, A., Beach, E. S., Barta, K. & Anastas, P. T., Jun-2014, In : Bioresource Technology. 161, p. 78-83 6 p.
Research output: Contribution to journal › Article › Academic › peer-review
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 degrees 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. (C) 2014 Published by Elsevier Ltd.
|Number of pages||6|
|Publication status||Published - Jun-2014|
- Lignin, Catalysis, Porous metal oxides, Bio-oil, Supercritical solvents, ARYL ETHERS, SOLVENT-EXTRACTION, HYDROGEN-TRANSFER, CATALYSTS, HYDRODEOXYGENATION, NI, GUAIACOL, FRACTIONATION, CONVERSION, PYROLYSIS