期刊
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
卷 74, 期 1-2, 页码 110-115出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jaap.2004.10.010
关键词
Eucalyptus globulus; wood; lignin; S/G ratio; pulp yield; delignification; pyrolysis
A set of Eucalyptus globulus woods from different origins and growth conditions, giving a wide range of pulp yields (from 40 to 60%) upon kraft cooking, was analyzed using Py-GC/MS. The carbohydrate-derived compounds and the compounds derived from syringyl (S) and guaiacyl (G) lignin units were analyzed and the lignin/carbohydrate and S/G ratios determined. Eucalypt woods giving higher pulp yield released higher amounts of S-type compounds upon Py-GC/MS. A significant correlation was observed between pulp yield and the lignin composition in terms of the S/G ratio. By contrast, the lignin/carbohydrate ratio obtained by Py-GC/MS did not show a significant correlation with the pulp yield. This indicates that the lignin composition is a more important parameter influencing pulp yield than the lignin content. (C) 2005 Elsevier B.V All rights reserved.
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