摘要
采用高压差示扫描量热仪(PDSC)测定航空燃料的主要成分正十二烷的氧化温度和氧化诱导期,采用两种不同方法求解Flynn-Wall-Ozawa方程得到正十二烷的氧化活化能Ea分别为154.37和154.56kJ·mol-1,指前因子lgA(min-1)分别为16.60和16.64,同时应用Arrhenius修正方程计算得到正十二烷的氧化活化能为139.59kJ·mol-1,从化学动力学的角度评价了正十二烷的热安定性。
The oxidation temperature and oxidation induction time of n-dodecane, a main component in aviation fuel ,were determined by means of pressure differential scanning calorimetry （ PDSC ）. The oxidation activation energy and pre-exponential factors of n-dodecane were obtained by two ways from Flynn-Wall-Ozawa equation to be 154. 37 and 154. 56 kJ·mol^-1 , 16. 60 and 16.64 min^-1, respectively. The oxidation activation energy of n-dodecane was calculated from Arrhenius modifying equation to be 139.59 kJ·mol^-1. The thermal stability of n-dodecane were evaluated from the view of chemical dynamics.
出处
《含能材料》
EI
CAS
CSCD
2007年第3期261-264,共4页
Chinese Journal of Energetic Materials
基金
国家863计划资助项目(2005AA730201)
国家自然科学基金(20576098)
关键词
分析化学
氧化活化能
高压差示扫描量热(PDSC)
正十二烷
热安定性
analytical chemistry
oxidation activation energy
pressure differential scanning calorimetry （PDSC）
n-dodecane
thermal stability
