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热重法测定阿奇霉素的热寿命
Thermogravimetry Study of the Lifetime of Azithromycin
【摘要】 用等温热重 ( TG)技术研究了阿奇霉素的热寿命 ,得到了失重为 5 %,7%和 1 0 %的寿命方程 .同时用 Kinssinger法计算了第二步热分解反应的活化能为 1 2 6 .4 k J/mol
【Abstract】 The lifetime of azithromycin was studied by isothermal thermogravimetry(TG)method.The lifetime equations at various weightloss ratio of 5%,7% and 10% were deduced as lg τ = 2083.96 / T -4.1299, lg τ =4588.797/ T -8.9821 and lg τ =5074.97 /T -9.7668,respectively.The activation energy of thermal decomposition reaction in the second step obtained by using the method of Kinssinger is 126.43kJ/mol.
【关键词】 热重分析;
热寿命;
活化能;
阿奇霉素;
【Key words】 thermogravimetry; lifetime; activation energy; azithromycin;
【Key words】 thermogravimetry; lifetime; activation energy; azithromycin;
【基金】 河北省教育厅自然科学基金资助项目 ( 2 0 0 112 1)
- 【文献出处】 河北师范大学学报 , 编辑部邮箱 ,2001年04期
- 【分类号】TQ460.22
- 【被引频次】2
- 【下载频次】72