液化
生物量(生态学)
水热液化
制浆造纸工业
材料科学
原材料
乙醇
生物燃料
超临界二氧化碳
催化作用
蒸汽爆炸
作者
Chunyan Yang,Xiaoliang Yuan,Xueting Wang,Kejing Wu,Yingying Liu,Changjun Liu,Houfang Lu,Bin Liang
出处
期刊:Frontiers of Chemical Engineering in China
日期:2020-05-22
卷期号:14 (4): 605-613
被引量:3
标识
DOI:10.1007/s11705-019-1841-0
摘要
In the present work, ball milling was applied for the pretreatment of lignocellulose to obtain high conversion and bio-oil yield in supercritical ethanol. Ball milling substantially decreased the crystallinity and particle size of lignocellulose, thereby improving its accessibility in ethanol solvent. An increased bio-oil yield of 59.2% was obtained for the ball milled camphor-wood sawdust at 300°C, compared with 39.6% for the original lignocellulose. Decreased crystallinity significantly benefited the conversion of the cellulose component from 60.8% to 91.7%, and decreased particle size was beneficial for the conversion of all components. The obtained bio-oil had a high phenolic content, as analyzed by gas chromatography-mass spectrometry. Methoxylation and retro-aldol condensation were observed during alcoholysis, and the reaction pathways of lignocellulose in supercritical ethanol were attributed to the action of free radicals.
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