3-甲基吡啶-N-氧化物热稳定性分析Thermal stability analysis of 3-methylpyridine N-oxide
方佳静,余文翟,潘旭海,华敏,陈发明,蒋军成
摘要(Abstract)：
为了评估反应体系发生热失控时引发3-甲基吡啶-N-氧化物分解的可能性,采用差示扫描量热仪(DSC Q20)对3-甲基吡啶-N-氧化物在不同升温速率下的催化分解过程进行了试验研究。采用Kissinger法和Starink法计算热分解反应的活化能和指前因子。根据得到的活化能,计算3-甲基吡啶-N-氧化物在不同温度下到达最大反应速率所需要的时间(TMRad),结合可能性评估判据进行评估。结果表明:3-甲基吡啶-N-氧化物的分解由两部分组成;两种方法计算得到的活化能较为接近;当冷却失效,反应体系热失控温度达到448 K时,3-甲基吡啶-N-氧化物发生分解的可能性为高级,当温度为433~443 K时,可能性为中级,而当温度低于428 K时,可能性为低级。
关键词(KeyWords)： 安全工程;3-甲基吡啶-N-氧化物;差示扫描热分析仪;热分解;非等温动力学;达到最大反应速率时间
基金项目(Foundation): 江苏省高校自然科学基金重大项目(10KJA620013)
作者(Author): 方佳静,余文翟,潘旭海,华敏,陈发明,蒋军成
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