正十二烷氧化活化能的简易测定方法  

Simple Method of Measuring Oxidation Activation Energy of n-Dodecane

作　　者：余彩香[1] 米镇涛[1] 张香文[1] 

机构地区：[1]天津大学化工学院绿色合成与转化教育部重点实验室,天津300072

出　　处：《含能材料》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)

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.

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 

分 类 号：O621.2[理学—有机化学]