Mild hydrogenolysis of in-situ and isolated Pinus radiata lignins
| Autor: | Emmanuel Cazeils, Kirk M. Torr, Daniel J. van de Pas, Ian D. Suckling |
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| Rok vydání: | 2011 |
| Předmět: |
Environmental Engineering
Softwood Bioengineering Raw material Lignin complex mixtures chemistry.chemical_compound Phenols Hydrogenolysis Pressure Organic chemistry Nuclear Magnetic Resonance Biomolecular Waste Management and Disposal Renewable Energy Sustainability and the Environment Depolymerization technology industry and agriculture food and beverages General Medicine Pinus Wood Steam Monomer chemistry Biofuels Guaiacol Hydrogen |
| Zdroj: | Bioresource Technology. 102:7608-7611 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2011.05.040 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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