摘要
采用热重分析法研究了多孔玉米淀粉热分解过程。在氮气气氛下以5、10、20和30 K×min^(-1)的升温速率对其进行了热重分析,并采用OZAWA法、FRIEDMAN法和同步热分析法计算了多孔玉米淀粉热解反应的活化能分别为165.63、174.89和187.80 k J×mol^(-1)。经同步热分析法推导出反应级数为0.5~1;用Coats-Redfern法得到多孔玉米淀粉热解反应机理函数为[-ln(1-α)]1/2。
The thermal degradation of porous corn starch was investigated by thermogravimetric analysis. This measurement was processed in nitrogen atmosphere under different heating rates of 5, 10, 20 and 30 K×min^-1. The experimental data were processed by OZAWA, FRIEDMAN and simultaneous thermal analysis methods and the activation energies calculated were 165.63, 174.89 and 187.80 k J×mol^-1, respectively. The reaction order was 0.5-1 calculated by the simultaneous thermal analysis method and reaction mechanism function was [-ln（1-α）]^1/2 obtained from the Coats-Redfern method.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2015年第6期1371-1376,共6页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金(21103154
21001098
51172220
51172219)
浙江省钱江人才计划项目(2012R10065)
中国博士后科学基金(2013M531449)
关键词
多孔玉米淀粉
热重分析
反应动力学
活化能
porous corn starch
thermogravimetric analysis
kinetic
activation energy
作者简介
金顶峰（1980-），男，浙江永康人，中国计量学院副教授，博士。通讯联系人：金顶峰，E-mail：dfjin@zju．edu．cn
