摘要
分析了 TG- DTG曲线原始数据的处理方法对非等温热解动力学参数求算结果的影响 ,讨论了最佳数据点个数、取点范围以及取点的均匀程度 ,提出了用内插法选择数据点进行非等温热解动力学参数求算 .通过用该法对盐酸麻黄碱和依巴斯汀进行非等温热解动力学参数求算及其机理函数判定的结果表明 ,该方法合理可行 .同时 ,对单条 TG曲线得到几个与之相匹配的机理函数的原因进行了探讨 ,通过与多升温速率法相结合得到了唯一的。
The effect of choicing data from TG- DTG curves on the calculating non- isothernal decomposition kinetic parameters was studied.The number of data points which is the best, the range and uniformity of data points selected were discussed.An intercepting method was suggested to calculate non- isothermal decomposition kinetic parameters. The calculation of the non- isothermal decomposition kinetic parameters for ephedrini hydrochloridum and ribavirinum was processd by this method,and non- isothermal decomposition kinetic function was determined,which showed that the method was sound and feasible.Meanwhile,the reason why sole TG curve was coped with several model functions was studied.The thermal decomposition kinetic function obtained is solely and reliable by combining single and mutile- heating rate method.
出处
《中南民族学院学报（自然科学版）》
2000年第4期72-78,共7页
Journal of South-Central University for Nationalities(Natural Sciences)
关键词
热重-微商热重法
动力学参数求算
机理函数判定
thermogravimetry and differential thermogravimetry(TG-DTG)
calculation of kinetic parameters
kinetic function judging
