Study on radical evolution during maple lignin pyrolysis

被引：0
作者：
Fan Y. [1 ]
Lei M. [1 ]
Kong X. [1 ]
Liu C. [1 ]
Xiao R. [1 ]
机构：
[1] Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 11期
关键词：
EPR; Lignin; Product distribution; Pyrolysis; Radical;
D O I：
10.19912/j.0254-0096.tynxb.2021-0166
中图分类号：
学科分类号：
摘要：
Radical evolution during maple lignin pyrolysis is monitored by the electron paramagnetic resonance spectroscopy (EPR). Results showed that maple lignin pyrolysis radicals can be divided into three stages: the radical initiation stage below 450 ℃ in which the yield of liquid reaches the highest; the radical propagation stage between 450 ℃ and 550 ℃ in which the radical concentration increases sharply to 276.99×1017 spin/g at 550 ℃; the radical stabilization stage above 600 ℃. Furthermore, coupling change trend between temperature, hydrogen/carbon ratio, graphitization degree and radical concentration are separately well described by constructing regression equations, which provided a new idea to reveal the microscopic pyrolysis mechanism of lignin. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：352 / 357
页数：5
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