Renewable phenol production from lignin with acid pretreatment and ex-situ catalytic pyrolysis

被引:68
作者
Duan, Dengle [1 ,2 ]
Lei, Hanwu [2 ]
Wang, Yunpu [1 ]
Ruan, Roger [1 ,4 ,5 ]
Liu, Yuhuan [1 ]
Ding, Lijun [6 ]
Zhang, Yayun [3 ]
Liu, Lang [7 ]
机构
[1] Nanchang Univ, Minist Educ, Engn Res Ctr Biomass Convers, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China
[2] Washington State Univ, Dept Biol Syst Engn, 2710 Crimson Way, Richland, WA 99354 USA
[3] East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
[4] Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55108 USA
[5] Univ Minnesota, Dept Bioprod & Biosyst Engn, 1390 Eckles Ave, St Paul, MN 55108 USA
[6] Guangdong Univ Technol, Fac Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
[7] Chongqing Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Low Grade Energy Utilizat Technol & Syst, Chongqing 400044, Peoples R China
基金
中国国家自然科学基金; 美国食品与农业研究所;
关键词
Lignin; Catalytic pyrolysis; Activated carbon; Pretreatment; Phenol-rich bio-oil; RICH BIO-OIL; ACTIVATED CARBON; LIGNOCELLULOSIC BIOMASS; MICROWAVE PYROLYSIS; FUEL PRODUCTION; WASTE; TEMPERATURE; ALKALI; STRAW; RESIDUES;
D O I
10.1016/j.jclepro.2019.05.206
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A novel pathway to clean production of phenol-rich bio-oil and syngas by catalytic pyrolysis of pretreated lignin was investigated for the first time. The process integrated pretreatment and catalysis. The results revealed that the optimal condition for phenol selectivity (95.5%) from unpretreated lignin pyrolysis was achieved at a pyrolytic temperature of 550 degrees C with catalyst/lignin ratio of 0.7. Lignin pretreatment boosted the volatile production as well as syngas formation. A significant increase in the phenol concentration (from 0.6 to 7.0 mg/mL) for pretreated lignin was achieved at pretreated temperature of 50 degrees C for 60 min. During the deactivation test, the catalyst exhibited a benign catalytic performance for phenol selectivity after using four times. Further, the "phenol pool" and free radical were proposed to uncover the mechanism of phenol generation from catalytic conversion of pretreated lignin. These findings pave a new and clean route to produce high-purity phenol, which could ultimately advance the utilization of lignin through facile fix-bed catalytic pyrolysis technology. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码:331 / 340
页数:10
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