文献类型：期刊文献

英文题名：Effect of Vacuum Heat Treatment on the Chemical Composition of Larch Wood

作者：Wang, Zhe[1,2] Yang, Xia[3] Sun, Bailing[1] Chai, Yubo[1] Liu, Junliang[1] Cao, Jinzhen[2]

第一作者：Wang, Zhe

通信作者：Liu, JL[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Beijing Forestry Univ, Dept Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Changchun Univ Technol, Sch Art & Design, Changchun 130012, Peoples R China

年份：2016

卷号：11

期号：3

起止页码：5743-5750

外文期刊名：BIORESOURCES

收录：;EI(收录号：20163902854840);Scopus(收录号：2-s2.0-84988651887);WOS:【SCI-EXPANDED(收录号:WOS:000384922400009)】；

基金：The authors thank the Chinese National Natural Science Foundation for financial support of the project "Thermal effect and mechanism of wood under vacuum heat treatment," Grant No. 31370558.

语种：英文

外文关键词：Larch wood; Thermo-vacuum treatment; Chemical modifications

摘要：The effects of vacuum heat treatment were studied relative to the chemical composition of larch wood. The samples were heat-treated in vacuum at 160 degrees C, 200 degrees C, and 240 degrees C for 4 h, and the chemical changes were investigated by wet chemical analysis, elemental analysis, calorific value determination, and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). The relative percentage contents of lignin and extractives increased after heat treatment. Additionally, the relative percentage contents of holocellulose, cellulose, and hemicelluloses decreased as a result of the thermo-vacuum treatment. Elemental analysis showed a slight reduction in the contents of hydrogen and oxygen. Vacuum heat treatment also increased the calorific value compared with untreated samples.