1. Mild hydrogenolysis of in-situ and isolated Pinus radiata lignins.
- Author
-
Torr KM, van de Pas DJ, Cazeils E, and Suckling ID
- Subjects
- Nuclear Magnetic Resonance, Biomolecular, Phenols chemistry, Pressure, Steam, Wood chemistry, Biofuels, Hydrogen chemistry, Lignin chemistry, Pinus chemistry
- Abstract
The Pd/C-catalysed hydrogenolysis of in-situ and isolated lignins from Pinus radiata wood was investigated to gain a more complete understanding of the factors affecting yield and composition of the hydrogenolysis products. Such hydrogenolysis products could potentially be refined into aromatic feedstock chemicals providing sustainable alternatives to petroleum-derived phenols. Lignins were converted into solvent-soluble oils composed of monomeric, dimeric and oligomeric products in high yields, up to 89% of the original lignin. The main monomer products were dihydroconiferyl alcohol and 4-n-propyl guaiacol. Dimeric and oligomeric compounds constituted 75% of the hydrogenolysis oils and were mainly composed of dihydroconiferyl alcohol and 4-n-propyl guaiacol units linked by β-5, 5-5, 4-O-5 and β-1 linkages. Hydrogenolysis of steam exploded wood gave lower yields of lignin hydrogenolysis products compared to unmodified wood due to fewer reactive aryl-ether linkages in the lignin., (Copyright © 2011 Elsevier Ltd. All rights reserved.)
- Published
- 2011
- Full Text
- View/download PDF