摘要
为研究磺化碱木质素在高温条件下的热稳定性能,实验采用热重-红外分析(TG-IR)和差示扫描量热分析(DSC)研究了磺化麦草碱木质素在非氧状态下热分解反应的动力学过程.利用多升温速率法Kissingr法和Ozawa法,分别计算了磺化麦草碱木质素热动力学方程中的表观活化能(E)和频率因子lnA,分别为118.3kJ.mol-1,121.46kJ.mol-1;20.40min-1,15.92min-1;利用Kissingr法计算了热动力学方程的反应级数是1.8.
The thermal decomposition process of sulfonated wheat-strew soda lignin at the none-oxygen state was studied, using TG-IR and Non-isothermal Differential Scanning Calorimetry （DSC）. The Kissinger and Ozawa equation kinetic parameters of the thermal decomposition were obtained. The apparent activation energy Ea, and pre-exponential factor, lnA, are 118.3k J· mol^- 1, 121.46k J· mol ^- 1; 20.40min^- 1, 15.92min^- 1 , respectively. The reaction order of the process is 1.8 by using Kissinger method.
出处
《中国科学院研究生院学报》
CAS
CSCD
2007年第2期174-178,共5页
Journal of the Graduate School of the Chinese Academy of Sciences
基金
广东省自然科学基金重点项目(05103536)资助
