Bio-based phenols and fuel production from catalytic microwave pyrolysis of lignin by activated carbons

被引:165
作者
Bu, Quan [1 ]
Lei, Hanwu [1 ]
Wang, Lu [1 ]
Wei, Yi [1 ]
Zhu, Lei [1 ]
Zhang, Xuesong [1 ]
Liu, Yupeng [1 ]
Yadavalli, Gayatri [1 ]
Tang, Juming [1 ]
机构
[1] Washington State Univ, Dept Syst Biol, Bioprod Sci & Engn Lab, Richland, WA 99354 USA
关键词
Lignin; Catalytic pyrolysis; Activated carbon; Phenols; Reaction mechanism; ASSISTED PYROLYSIS; BIOMASS; CHEMISTRY; KINETICS; DEGRADATION; PELLETS; OIL;
D O I
10.1016/j.biortech.2014.03.103
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The aim of this study is to explore catalytic microwave pyrolysis of lignin for renewable phenols and fuels using activated carbon (AC) as a catalyst. A central composite experimental design (CCD) was used to optimize the reaction condition. The effects of reaction temperature and weight hourly space velocity (WHSV, h (1)) on product yields were investigated. GC/MS analysis showed that the main chemical compounds of bio-oils were phenols, guaiacols, hydrocarbons and esters, most of which were ranged from 71% to 87% of the bio-oils depending on different reaction conditions. Bio-oils with high concentrations of phenol (45% in the bio-oil) were obtained. The calorific value analysis revealed that the high heating values (HHV) of the lignin-derived biochars were from 20.4 to 24.5 MJ/kg in comparison with raw lignin (19 MJ/kg). The reaction mechanism of this process was analyzed. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:142 / 147
页数:6
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