摘要
为研究不同气氛(氮气和空气)、不同温度区间(300~500℃,300~ 700℃,300~900℃)对造纸法再造烟叶基片热裂解产物成分及其总量的影响,采用固相微萃取、吸附解附和气相色谱-质谱联用法进行分析,结果表明:1)在氮气和空气气氛下,基片在300~700℃和300~900℃温度区间内的热裂解产物种类均明显多于300~500℃温度区间,且产生了大量稠环芳烃、烯烃类物质,烟碱只在300~500℃区间检出,糠醛和新植二烯在不同温度区间的含量均较高;2)在相同温度区间内,在空气气氛下,相对分子质量较小的巴豆醛、2-甲基-呋喃、糠醛等重要热裂解产物的释放量均高于氮气气氛下的释放量,醇类物质的相对释放量增大,且空气中氧气的存在促进基片组分的充分燃烧,致使其热解产物的总量降低.
In order to study the effects of different atmospheres (nitrogen and air) and temperature ranges (300~500 ℃, 300~700 ℃ and 300~900 ℃) on the composition and amount of pyrolysis products in paper- making reconstituted tobacco substrates, solid phase microextraction, adsorption-desorption and gas chromatography-mass spectrometry methods were used for analysis. The results showed that under the nitrogen and air atmospheres, the pyrolysis products of substrates at the range of 300~700 ℃ and 300~900 ℃ obviously increased when compared with those at the range of 300~500 ℃. A large number of polycyclic aromatic hydrocarbons and olefins were produced in these two temperature ranges. Nicotine was only found in the pyrolysis products of substrates at the range of 300~500 ℃. The contents of furfural and phytadiene were higher at these three temperature ranges.In the same temperature range,under the air atmosphere,the release amount of important cleavage products such as crotonaldehyde,2-methyl-furan and furfural with relatively low molecular weight was higher than that under nitrogen atmosphere. The relative release of alcohols increased, and the presence of oxygen in air promoted the full combustion of substrates, thereby resulting in the reduction of total pyrolysis products .
作者
付祺
李锋
史近文
陶文梅
卫青
FU Qi;LI Feng;SHI Jinwen;TAO Wenmei;WEI Qing(College of Food and Biology Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China;Jilin Tobacco Industrial Co.,Ltd.,Changchun 130000,China;Yunnan Reascend Tobacco Technology (Group) Co.,Ltd.,Kunming 650106,China)
出处
《轻工学报》
CAS
2019年第2期16-23,共8页
Journal of Light Industry
基金
中国烟草总公司科技重大专项项目(110201201037)
关键词
造纸法再造烟叶基片
热裂解产物
氮气气氛
空气气氛
温度区间
paper-making reconstituted tobacco substrate
pyrolysis product
nitrogen atmosphere
air atmosphere
temperature range
