磺化麦草碱木质素热分析动力学研究 |
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作者姓名: | 梁文学 邱学青 欧阳新平 杨东杰 |
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作者单位: | 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 |
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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 kJ8226;mol-1、121.46 kJ8226;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。
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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 |
Study of thermal analysis technology of sulfonated wheat--strew soda lignin |
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Authors: | LIANG Wen-Xue QIU Xue-Qing OUYANG Xin-Ping YANG Dong-Jie |
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Institution: | School of Chemical and Energy Engineering, South China University of Technology, Guangdong Provincial Laboratory of Green Chemical Technology, Guangzhou, China, 510640 |
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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 kJ8226;mol-1, 121.46 kJ8226;mol-1; 20.40min-1, 15.92min-1; respectively. The reaction order of the process is 1.8 by using Kissinger method. |
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Keywords: | sulfonated wheat- strew lignin TG-IR DSC thermal analysis kinetic |
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