摘要
以甲醇作为溶剂,考察了小麦秸秆(WS)粉末的解聚反应,用气相色谱/质谱联用仪分析了在220℃下反应所得液相混合物,从中共鉴定出37种化合物,包括11种非芳香族的化合物和26种含芳环的化合物,其中诸多含苯环的化合物(BRCCs)是木质素的解聚产物。根据BRCCs的结构探讨了WS中木质素解聚的机理。
Depolymerization of wheat stalk（WS） powder in methanol was investigated.Liquid mixture from the reaction at 220℃was analyzed with gas chromatography/mass spectrometry.In total,37 compounds were identified,including 11 non-aromatic ones and 26 aromatic-ring containing ones,among which many benzene-ring containing compounds（BRCCs） are products from lignin depolymerization.The mechanisms for depolymerization of lignin in WS are examined according to structures of the BRCCs.
基金
国家973计划(2007CB210205)
江苏省自然科学基金(BK2007036)
徐州市工业科技计划(XM08C092)的资助
关键词
小麦秸秆粉末
亚临界甲醇
解聚
反应混合物
气相色谱/质谱联用分析
wheat stalk powder
subcritical methanol
depolymerization
reaction mixture
analysis with gas chromatography/mass spectrometry
