烟草科技2016，Vol.49Issue(10)：51-59,9.DOI:10.16135/j.issn1002-0861.2016.0036
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
摘要
Abstract
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)Key words
Tobacco/Pyrolysis/Chemical structure/Real-time temperature-rising infrared spectrometry (RTR-IR)分类
轻工纺织引用本文复制引用
周顺,谢映松,陈刚,王成名,王孝峰,宁敏,徐迎波,李振华,何庆,张亚平,佘世科,朱栋梁..基于实时升温红外光谱研究烟草热解化学结构变化[J].烟草科技,2016,49(10):51-59,9.基金项目
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）。 （）
