基于实时升温红外光谱研究烟草热解化学结构变化  

Study on variations of chemical structure of pyrolyzed tobacco based on real-time temperature-rising infrared spectrometry

作　　者：周顺[1,2] 王孝峰[1] 宁敏[1] 徐迎波[1] 李振华[3] 何庆[1,2] 张亚平[1,2] 佘世科[2] 朱栋梁[2] 谢映松[2] 陈刚[2] 王成名[4] 

机构地区：[1]安徽中烟工业有限责任公司烟草行业燃烧热解研究重点实验室,合肥市高新区天达路9号230088 [2]安徽中烟工业有限责任公司烟草化学安徽省重点实验室,合肥市高新区天达路9号230088 [3]安徽中烟工业有限责任公司原料部 [4]中国科学技术大学微尺度国家实验室,合肥市包河区金寨路96号230026

出　　处：《烟草科技》2016年第10期51-59,共9页Tobacco Science & Technology

基　　金：安徽中烟工业有限责任公司科技项目"烟草低温加热状态下烟气释放规律 ;物化特性及影响因素研究"(2015103);"阴燃特性分析新技术及其标准化预研研究"(2014103)

摘　　要：为揭示烟草热解化学结构变化特性,利用实时升温红外光谱仪（RTR-IR）在线检测分析了烤烟、白肋烟、香料烟以及＂三丝＂的化学结构随温度的变化规律。结果表明：（1）不同烟草样品中相同官能团强度随温度变化略有差异,同一种烟草样品不同官能团强度随温度变化差异显著。（2）在烟草第一主要失重区（150℃-400℃）,O—H、N—H、C—O以及C—N降解完毕,CO仅有少量残留,同时生成大量芳香成分,其与C—H一同成为焦炭中主要官能团;在第二失重区（400℃-570℃）,主要发生C—H和芳香成分的氧化降解,并释放大量热量;在600℃以上,主要发生各种无机盐的吸热生成和转化反应。In order to evaluate the properties and variations of chemical structures of pyrolyzed tobacco,real-time temperature-rising infrared spectrometry（RTR-IR） was applied to the online detection and analysis of flue-cured, burley and oriental tobacco, expanded tobacco, expanded cut stem and reconstituted tobacco at different pyrolysis temperatures. The results showed that： 1） The intensity variations of the same functional group in different tobacco samples differed slightly, while the intensities of different functional groups in the same sample differed significantly along with the change of temperature. 2） At the first main temperature interval of mass loss of tobacco（150 ℃-400 ℃）, O—H, N—H, C—O, and C—N bonds degraded totally and there was only a trace of C O bond left, accompanied with a great amount of aromatic components formed,which became the primary functional groups in the char together with the C—H bond. The oxidative degradation of C—H bond and aromatic components principally occurred at the second temperature interval of mass loss（400 ℃-570 ℃）. At the same time significant heat was released. The endothermic formation and transformation of inorganic salts were the main chemical reactions above 600 ℃.

关 键 词：烟草 热解 化学结构 实时升温红外光谱(RTR-IR) 

分 类 号：TS41[农业科学—烟草工业]