林产化学与工业2012，Vol.32Issue(4)：58-62,5.
没食子酸的热稳定性研究
Thermal Stability of Gallic Acid
摘要
Abstract
Thermal decomposing curves of gallic acid in different heating speeds were obtained in the nitrogen atmosphere by TG-DTG techniques. Two analysis methods of Achar and Coats-Redfem were used to speculate the probable mechanism of thermal decomposing reaction and the kinetic parameters. The shelf life of gallic acid at room temperature was calculated by the kinetic parameters of the first stage. With the increasing of the heating rate, thermal decomposing tempreture of gallic acid rose. The most probable kinetic mechanisms of the three-stage thermal decomposition were all chemical reactions, and the corresponding mechanisms followed on reaction order. In accordance with the data of TC and Gaussian, one molecule of gallic acid lost 0. 5 atom O at the fisrt-stage, and lost another 0.5 atom O and a molecule CO2 at the second stage. The shelf life of gallic acid at room temperature was about 1.5-2 years.关键词
没食子酸/TG-DTG/热分解/非等温动力学/Gaussian模拟Key words
gallic acid /TG-DTG/thermal decomposition/non-isothermal kinetics/Gaussian simulation分类
化学化工引用本文复制引用
郭满满,肖卓炳,彭密军,于华忠,郭瑞轲..没食子酸的热稳定性研究[J].林产化学与工业,2012,32(4):58-62,5.基金项目
湖南省自然科学基金资助项目(10JJ6024) （10JJ6024）
湖南省高校"林产资源化学与林化产品开发"科技创新团队支持计划(湘教通(2010)212号) （湘教通(2010）
吉首大学研究生科研创新项目(JGY201117) （JGY201117）
