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Citation: WANG Lin-fang, ZOU Cheng, GUO Da-liang, XUE Guo-xin. Effect of extraction temperature on depolymerization characteristics of ethanol organosolv lignin in supercritical ethanol[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(7): 798-804. shu

Effect of extraction temperature on depolymerization characteristics of ethanol organosolv lignin in supercritical ethanol

WANG Lin-fang ^1,2 ,
ZOU Cheng ^1,3 ,
GUO Da-liang ^1,2,3,*,, ,
XUE Guo-xin ^1,*,,

1.
College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China
2.
Institute of Chemical Industry of Forest Products Chinese Academy of Forestry, Jiangsu Key Lab of Biomass Energy & Materials, Nanjing 210042, China
3.
Tianjin Key Lab of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China

Corresponding author: GUO Da-liang, guodl@zstu.edu.cn XUE Guo-xin, xueguoxin@126.com
Received Date: 16 January 2017
Revised Date: 14 March 2017

Fund Project: Zhejiang Province Natural Science Foundation of China LY16C160005Zhejiang Provincial Top Key Academic Discipline of Chemical Engineering and Technology, Zhejiang Sci-Tech University 2013YBZX06the Open Fund of Key Laboratory of Biomass Energy and Material of China JSBEM201504Zhejiang Provincial Top Key Academic Discipline of Chemical Engineering and Technology, Zhejiang Sci-Tech University ZYG2015012the Open Fund of Tianjin Key Laboratory of Pulp & Paper (Tianjin University of Science & Technology) 201601

Figures(5)

Effect of extraction temperature (160, 180 and 200 ℃) on depolymerization characteristics of ethanol organosolv lignin (EOL) was investigated with a micro autoclave reactor. Three different EOLs (EOL-160, EOL-180 and EOL-200) were prepared by controlling extraction temperature, and their properties including functional groups, molecular weight distribution and thermogravimetric properties were analyzed by infrared spectroscopy (FT-IR), gel permeation chromatography (GPC) and thermogravimetric analysis (TG). The liquid and solid products obtaining from EOLs depolymerized in supercritical ethanol were analyzed by gas chromatography/mass spectrometry (GC/MS) and FT-IR, respectively. The results show that the main phenolic compound product for EOL-160, EOL-180 and EOL-200 depolymerized in supercritical ethanol were paraethyl phenol, 2,6-dimethoxy phenol and 4-hydroxy-3-methoxy-benzoate, respectively.
- extraction temperature,
- ethanol organosolv lignin,
- supercritical ethanol,
- depolymerization
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