燃料化学学报Issue(10)：1212-1217,6.
麦草碱木质素的微波辅助液化降解
Liquefaction of wheat straw alkali lignin under microwave irradiation
摘要
Abstract
The effects of liquefying agent, catalyst, reaction temperature and time on the yield of bio-oil inmicrowave assisted liquefaction of wheat straw alkali lignin were investigated. And the liquefaction products were characterized by FT-IR, GC-MS and 1 H-NMR. It is found that microwave irradiation greatly shortensliquefaction time with methanol as liquefying agent and ferric sulfate as catalyst , where the yield of bio-oil is up to 55. 22% at the relatively low liquefaction temperature of 160 ℃ for 5 min. The structure of residual lignin afterliquefaction exhibits very limited variation , indicating that the degraded lignin fragments have lower probability of recondensation, and residual lignin can be reused to improve the utilization rate of lignin. The identifiedliquefaction products are mainly monophenolic compounds , in which S, G and H type compounds account for 57. 72% , 25. 28% and 8. 98% , respectively. The existence of the signals for β-O-4 and C-C bonds in the 1 H-NMR spectra suggests that the bio-oils include a small amount of dimers and oligomers except for monophenolic compounds.关键词
麦草碱木质素/微波辅助/液化/液化剂/生物油Key words
wheat straw alkali lignin/microwave irradiation/liquefaction/liquefying agent/bio-oil分类
能源科技引用本文复制引用
欧阳新平,黄相振,邱学青..麦草碱木质素的微波辅助液化降解[J].燃料化学学报,2014,(10):1212-1217,6.基金项目
国家重点基础研究发展规划(973计划,2012CB215302)。 （973计划,2012CB215302）
