摘要
采用热重-差热法测定了1-L-苯丙氨酸-1-脱氧-D-果糖(PDF)的热失重和热裂解温度,在线裂解GC/MS联用技术鉴定了PDF在350,450,550,650,750和850℃下的裂解产物。结果表明,PDF的初始裂解温度为145.91℃,二次裂解温度为170.70℃,500℃时裂解物失重约80%;裂解产物主要为芳烃类和杂环化合物类;裂解产物的数量随着裂解温度的升高而增多,尤其是芳香族化合物类。
The thermal mass loss and pyrolysis temperatures of 1-L-phenylalanine-1-deoxy-D-fructose（PDF） were tested by thermogravimetry-differential thermal analyzer（TG-DTA）.The pyrolysis behavior of PDF was identified by on-line pyrolysis and gas chromatography/mass spectrometry（Py-GC/MS） at 350,450,550,650,750 and 850 ℃,respectively.The results showed that the primary pyrolysis temperature of PDF was 145.91 ℃,and the secondary one was 170.70 ℃.The thermal mass loss of PDF reached about 80% at 500 ℃.The major pyrolytic products of PDF were aromatic hydrocarbons and heterocyclic compounds.The number of pyrolytic products of PDF increased with the rise of temperature,especially aromatic hydrocarbons.
出处
《烟草科技》
EI
CAS
北大核心
2011年第4期41-46,共6页
Tobacco Science & Technology
