期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 16, 页码 7608-7611出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.05.040
关键词
Softwood; Lignin; Hydrogenolysis; Depolymerisation; NMR spectroscopy
资金
- Foundation for Research Science and Technology (FRST)
- Scion
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 feed-stock 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 beta-5, 5-5, 4-O-5 and beta-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. (C) 2011 Elsevier Ltd. All rights reserved.
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