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中国科学院大学学报 ›› 2007, Vol. 24 ›› Issue (2): 174-178.DOI: 10.7523/j.issn.2095-6134.2007.2.006

• 论文 • 上一篇    下一篇

磺化麦草碱木质素热分析动力学研究

梁文学 邱学青 欧阳新平 杨东杰   

  1. 华南理工大学化工与能源学院 广东省绿色化学产品技术重点实验室 广州 510640
  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2007-03-15

Study of thermal analysis technology of sulfonated wheat--strew soda lignin

LIANG Wen-Xue, QIU Xue-Qing, OUYANG Xin-Ping, YANG Dong-Jie   

  1. School of Chemical and Energy Engineering, South China University of Technology, Guangdong Provincial Laboratory of Green Chemical Technology, Guangzhou, China, 510640
  • Received:1900-01-01 Revised:1900-01-01 Published:2007-03-15

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118.3 kJ•mol-1、121.46 kJ•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。

关键词: 磺化碱木质素, 热重-红外分析(TG-IR), 差示扫描量热分析(DSC), 热分析动力学

Abstract: 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 118.3 kJ•mol-1, 121.46 kJ•mol-1; 20.40min-1, 15.92min-1; respectively. The reaction order of the process is 1.8 by using Kissinger method.

Key words: sulfonated wheat- strew lignin, TG-IR, DSC, thermal analysis kinetic

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