[1]曹俊,肖刚,许啸,等.木质素热解/炭化官能团演变与焦炭形成[J].东南大学学报(自然科学版),2012,42(1):83-87.[doi:10.3969/j.issn.1001-0505.2012.01.016]
 Cao Jun,Xiao Gang,Xu Xiao,et al.Functional groups evolvement and charcoal formation during lignin pyrolysis/carbonization[J].Journal of Southeast University (Natural Science Edition),2012,42(1):83-87.[doi:10.3969/j.issn.1001-0505.2012.01.016]
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木质素热解/炭化官能团演变与焦炭形成()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第1期
页码:
83-87
栏目:
能源与动力工程
出版日期:
2012-01-18

文章信息/Info

Title:
Functional groups evolvement and charcoal formation during lignin pyrolysis/carbonization
作者:
曹俊1肖刚12许啸1金保昇1
(1东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096)(2浙江大学能源清洁利用国家重点实验室,杭州310027)
Author(s):
Cao Jun1Xiao Gang12Xu Xiao1Jin Baosheng1
(1 Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China)
(2State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)
关键词:
木质素焦炭官能团导电性
Keywords:
lignin charcoal functional groups electrical resistivity
分类号:
TK6
DOI:
10.3969/j.issn.1001-0505.2012.01.016
摘要:
为了深入理解生物质热解/炭化过程,制备功能型焦炭,采用热重红外联用仪研究了木质素热解/炭化官能团演变与焦炭形成,并对所形成焦炭进行了导电性测试.实验结果表明:木质素热解/炭化过程分为4个阶段:200℃以下为自由水的脱除阶段; 200~500℃为热解阶段,焦炭开始形成; 500~900℃时焦炭中C—C键和C—H键进一步断裂,苯环大部分已被解链或芳香族化,形成无定形炭,在此阶段,焦炭的电阻率迅速下降,由986Ω·cm减小到0.6Ω·cm; 900~1400 ℃时,碳碳双键几乎完全消失,焦炭内部结构重组,形成了一种介于无定型结构和石墨结构之间的新结构,电阻率达到0.2Ω·cm,导电性进一步增强.
Abstract:
In order to produce high added value functional charcoal by biomass, a thermo-gravimetric analyzer coupled with a fourier transform infrared spectrometry system (TG-FTIR) was applied to investigate the relationship with functional groups evolvement and charcoal formation during lignin pyrolysis/carbonization. And electrical resistivity of charcoals was also tested. Experiment results show that the moisture is volatilized below 200℃. Pyrolysis occurs at 200 to 500℃ and charcoal begins to form. At 500 to 900℃, C—C bonds and C—H bonds in charcoal break further, phenyls become aromatized and form amorphous carbon, meanwhile, electrical resistivity of charcoal is reduced rapidly from 986Ω·cm to 0. 6Ω·cm. At 900 to 1400℃ the structure of charcoal gets reconstructed to form a new structure which lies between amorphous carbon and graphite. Meanwhile the electrical resistivity of charcoal is further reduced to lower, about 0. 2Ω·cm.

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备注/Memo

备注/Memo:
作者简介:曹俊(1987—),女,博士生;肖刚(联系人),男,博士,副教授,xiaogangtianmen@yahoo.com.cn.
基金项目:国家自然科学基金资助项目(50806013)、国家重点基础研究发展计划(973计划)资助项目(2010CB732206).
引文格式: 曹俊,肖刚,许啸,等.木质素热解/炭化官能团演变与焦炭形成[J].东南大学学报:自然科学版,2012,42(1):83-87.[doi:10.3969/j.issn.1001-0505.2012.01.016]
更新日期/Last Update: 2012-01-20